Invisapeeps 2.0

Bessie S · Senior Member

Do You Know? (S/O of Did You Know?)

Bessie S · Senior Member

Aqua wrote:
Waterloo wrote:
Mean, median, and mode are three kinds of "averages". There are many "averages" in statistics, but these are, I think, the three most common, and are certainly the three you are most likely to encounter in your pre-statistics courses, if the topic comes up at all.

The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order, so you may have to rewrite your list first. The "mode" is the value that occurs most often. If no number is repeated, then there is no mode for the list.

The "range" is just the difference between the largest and smallest values.

I hope this helps!

I would like to know how to do a wave lattice twisted stitch. But I suspect this is something that would have to be shown to me in person.

This is all correct.

These three are known as "measures of center." Assuming a normal distribution of values (bell curve), they are all the same value. But of course in reality things are not always a perfectly normal distribution.

Something else to know is that the mean is very easily influenced by extreme values - peer pressure, as it were. If you add up:

1, 2, 4, 5, 8

their sum is 20, and there are five values, so the mean is 20/5 = 4.

Now consider:

1, 2, 4, 5, 98

Still five values, but because of the last value in the list, the sum is 110 and the mean is 22. Big difference between 22 and 4, and it is all because of the one extreme value.

Consider those same two lists of numbers, though:

1, 2, 4, 5, 8
1, 2, 4, 5, 98

In both lists, the number 4 is still right in the middle of the sequentially ordered list (the median). In other words, the median is much more robust to outliers (extreme values).

Does this vulnerability, as I might call it, of the mean matter? Not a lot of the time. The mean tends to be a generally very useful statistic, and a lot of inferential statistics is built around it. A big practical example of when it does matter, though, is when we're talking about income. All you need is one Bill Gates to severely distort the mean income. Median is a more useful measure of center for income, because a Bill Gates or an Oliver Twist or two won't skew things as much.

...that was probably WAY more than you wanted to know!

No, Aqua, you're explaining it in a way I can understand and it's good.

-- Edited by Bessie S on Wednesday 9th of May 2012 05:31:32 PM

EmmDee · Guru

Median - values are arranged from smallest to largest and its literally the number in the middle of the list

Mean is the sum of all values divided by the quantity of values

Mode - I believe this is the most occurring value

Waterloo · Member

Mean, median, and mode are three kinds of "averages". There are many "averages" in statistics, but these are, I think, the three most common, and are certainly the three you are most likely to encounter in your pre-statistics courses, if the topic comes up at all.

The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order, so you may have to rewrite your list first. The "mode" is the value that occurs most often. If no number is repeated, then there is no mode for the list.

The "range" is just the difference between the largest and smallest values.

I hope this helps!

I would like to know how to do a wave lattice twisted stitch. But I suspect this is something that would have to be shown to me in person.

Kalikat · Guru

EmmDee wrote:
Median - values are arranged from smallest to largest and its literally the number in the middle of the list

Mean is the sum of all values divided by the quantity of values

Mode - I believe this is the most occurring value

To help me remember which is which, I came up with this.

Median is like the median in the road...it runs down the middle.

Mean - so what you mean (not EmmDee...just a phrase) is the average

Mode = most (the number that occurs the most)

Bessie S · Senior Member

Kalikat wrote:
EmmDee wrote:
Median - values are arranged from smallest to largest and its literally the number in the middle of the list

Mean is the sum of all values divided by the quantity of values

Mode - I believe this is the most occurring value
To help me remember which is which, I came up with this.
Median is like the median in the road...it runs down the middle.
Mean - so what you mean (not EmmDee...just a phrase) is the average
Mode = most (the number that occurs the most)

Thank you, Kalicat! Just what my brain needs to remember. I learned it once in University but never used it. My nephew is a statistician with a Master's degree for the Department of Labour (I guess it's Labor for you folks) in DC and he told me again a couple of years ago but it never sticks. Thanks to the others as well.

Sorry, I don't know from stitches. Maybe someone else does.

Aqua · Veteran Member

Waterloo wrote:
Mean, median, and mode are three kinds of "averages". There are many "averages" in statistics, but these are, I think, the three most common, and are certainly the three you are most likely to encounter in your pre-statistics courses, if the topic comes up at all.

The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order, so you may have to rewrite your list first. The "mode" is the value that occurs most often. If no number is repeated, then there is no mode for the list.

The "range" is just the difference between the largest and smallest values.

I hope this helps!

I would like to know how to do a wave lattice twisted stitch. But I suspect this is something that would have to be shown to me in person.

This is all correct.

These three are known as "measures of center." Assuming a normal distribution of values (bell curve), they are all the same value. But of course in reality things are not always a perfectly normal distribution.

Something else to know is that the mean is very easily influenced by extreme values - peer pressure, as it were. If you add up:

1, 2, 4, 5, 8

their sum is 20, and there are five values, so the mean is 20/5 = 4.

Now consider:

1, 2, 4, 5, 98

Still five values, but because of the last value in the list, the sum is 110 and the mean is 22. Big difference between 22 and 4, and it is all because of the one extreme value.

Consider those same two lists of numbers, though:

1, 2, 4, 5, 8
1, 2, 4, 5, 98

In both lists, the number 4 is still right in the middle of the sequentially ordered list (the median). In other words, the median is much more robust to outliers (extreme values).

Does this vulnerability, as I might call it, of the mean matter? Not a lot of the time. The mean tends to be a generally very useful statistic, and a lot of inferential statistics is built around it. A big practical example of when it does matter, though, is when we're talking about income. All you need is one Bill Gates to severely distort the mean income. Median is a more useful measure of center for income, because a Bill Gates or an Oliver Twist or two won't skew things as much.

...that was probably WAY more than you wanted to know!

Farmer Guy · Me and the sheep are tight.

Whats the formular for standard diviation? I know thats not spelt correct but always wonderd.

loomatic · Senior Member

What I would like to know is what is the difference in processing between corn syrup and corn oil. They both come fron the same plant, so how does one get such different products?

Aqua · Veteran Member

Farmer Guy wrote:
Whats the formular for standard diviation? I know thats not spelt correct but always wonderd.

Rather than type it out (from http://www.mathsisfun.com/data/standard-deviation-formulas.html):

(Yeah, not great link, but the formula is right.) Theta is the symbol standing for the SD, N is the number of subjects, Xi is each data point for subject i, and mu is the mean.

Too Sensitive · Senior Member

I want to know how to explain gravity to a four year old

loomatic · Senior Member

Too Sensitive wrote:
I want to know how to explain gravity to a four year old

The Earth sucks.

wink

Too Sensitive · Senior Member

loomatic wrote:
Too Sensitive wrote:
I want to know how to explain gravity to a four year old
The Earth sucks.

biggrin Love it!!!!

Bessie S · Senior Member

loomatic wrote:
What I would like to know is what is the difference in processing between corn syrup and corn oil. They both come fron the same plant, so how does one get such different products?

A kernel of corn is a seed. The outer part is the husk, the inner part is the germ and the rest of it is starch. The germ contains the oil and there is a process to extract it. Corn syrup is made from the starch - there's another process to do this. So, same plant but different parts.

-- Edited by Bessie S on Thursday 31st of May 2012 12:06:40 PM

Mata Hari · Veteran Member

to add to the corn part
oil is usually squeezed from a part of the plant
syrup is made by reduction

Waterloo · Member

Gravity. Start with a grapefruit. Set it in the middle of the table. Grab some oranges, lemons, limes. Place them around the grapefruit. Show the child how the smaller fruit move around the grapefruit. That rotation creates a "pull", meaning that things with weight are pulled to the ground. If this is too advanced for the child, here is a website with some pretty good ideas:

http://professorblue.blogspot.com/2009/09/gravity-for-preschoolers.html

ms_omi · Veteran Member

Aqua wrote:
Farmer Guy wrote:
Whats the formular for standard diviation? I know thats not spelt correct but always wonderd.
Rather than type it out (from http://www.mathsisfun.com/data/standard-deviation-formulas.html):

(Yeah, not great link, but the formula is right.) Theta is the symbol standing for the SD, N is the number of subjects, Xi is each data point for subject i, and mu is the mean.

This video gives a very nice, clear explanation of standard deviation:

http://www.khanacademy.org/math/statistics/v/statistics--standard-deviation

-- Edited by ms_omi on Tuesday 22nd of May 2012 07:19:00 PM

Bessie S · Senior Member

Okay, here's another question. Those symbols for male, female - you know man, woman, birth, death, infinity (thank you Ben Casey and Dr. Zorba), what are they and where are they from? They're not Greek letters. Anyone know the origin and history?

Evil Stepmother · Guru

They are from astrology. The Female symbol is Venus and the Male is Mars.

Bessie S · Senior Member

You guys rock! Saw my nephew who lives in Maryland and works in DC at a family reunion in Seaside Oregon last month. He was not ony proud of his auntie but toally impressed by the way you folks explained everything.

dqm either · Don't Quote Me

where's the Did you Know? thread?

dqm either · Don't Quote Me

Does anyone remember the name of the US President who was drunk/asleep his entire term? I think his term was a day and a half maybe? Or is that story not true?

RichardInTN · I believe in I.D.I.C.

dqm either wrote:
Does anyone remember the name of the US President who was drunk/asleep his entire term? I think his term was a day and a half maybe? Or is that story not true?

The shortest Presidential term would be William Henry Harrison, President from March 4, 1881 to April 4, 1881 (30 days, 12 hours, and 30 minutes). He died a month after taking office of pneumonia.

So I think that "drunk/asleep" "day and a half" thing is false.

Bets · Newbie

Too Sensitive wrote:
I want to know how to explain gravity to a four year old

You know how when you are in a car and it goes fast and kind of pushes you back in your seat?

The earth kind of does that too because the earth is spinning really fast and holding us to the center.

Evil Stepmother · Guru

Bets wrote:
Too Sensitive wrote:
I want to know how to explain gravity to a four year old
You know how when you are in a car and it goes fast and kind of pushes you back in your seat?
The earth kind of does that too because the earth is spinning really fast and holding us to the center.

This is simple and easy to understand. I like it.

Bessie S · Senior Member

What, you're asking me to narrow that down to one? No fair! I'm a Canuck.

(referring to the short-term drunken president).

-- Edited by Bessie S on Friday 10th of August 2012 06:33:17 PM

-- Edited by Bessie S on Monday 13th of August 2012 12:11:10 PM

dqm either · Don't Quote Me

The shortest Presidential term would be William Henry Harrison, President from March 4, 1881 to April 4, 1881 (30 days, 12 hours, and 30 minutes). He died a month after taking office of pneumonia.

So I think that "drunk/asleep" "day and a half" thing is false.

The story I'm thinking of (if it's even true) a President died and the VP was supposed to be sworn in but they weren't able to do it right away so somebody else held the office for a day. And he got drunk and fell asleep????

I will check snopes/google to see if anyone else has ever heard this story.

ETA: I guess Polk's term had ended but neither Zachary Taylor nor his VP wanted to be sworn in on the Sabbath (not sure if it was a Saturday or Sunday) so they waited a day. After that it gets all technical about who was or wasn't the President for that day. It doesn't say anything about anyone being drunk but he did sleep the majority of that day. Well, it was the day of rest.

-- Edited by dqm either on Friday 10th of August 2012 05:51:56 PM

RichardInTN · I believe in I.D.I.C.

dqm either wrote:
The shortest Presidential term would be William Henry Harrison, President from March 4, 1881 to April 4, 1881 (30 days, 12 hours, and 30 minutes). He died a month after taking office of pneumonia.
So I think that "drunk/asleep" "day and a half" thing is false.

The story I'm thinking of (if it's even true) a President died and the VP was supposed to be sworn in but they weren't able to do it right away so somebody else held the office for a day. And he got drunk and fell asleep????
I will check snopes/google to see if anyone else has ever heard this story.
ETA: I guess Polk's term had ended but neither Zachary Taylor nor his VP wanted to be sworn in on the Sabbath (not sure if it was a Saturday or Sunday) so they waited a day. After that it gets all technical about who was or wasn't the President for that day. It doesn't say anything about anyone being drunk but he did sleep the majority of that day. Well, it was the day of rest.

That would have made whomever was "Speaker of the House" at the time the next in line. He was never "President"... but he was "the guy at the top". While the "biggest fish left in the fishbowl" can weild the power, no one becomes President without being sworn in.

Bessie S · Senior Member

You don't even want to know how lame Canadian politics are compared to those in the US. In about 1990 our Provincial government fell and we had to have an election (look up Parliamentary System as opposed to being a Republic). The then-Premier (like Governor), Glen Clarke, was exposed in a scandal. You folks have Wartergate and Contragate and Monicagate. Casinos were coming to BC but there could only be a few and it was out to tender. Mr. Clarke pulled strings for a buddy of his in exchange for having a wooden deck built on the back of his house. The scandal didn't even get a nickname.

dqm either · Don't Quote Me

That would have made whomever was "Speaker of the House" at the time the next in line. He was never "President"... but he was "the guy at the top". While the "biggest fish left in the fishbowl" can weild the power, no one becomes President without being sworn in.

yeah at the time of this story I don't think they had the position "speaker of the house" I don't think it was invented yet. I guess for that day nobody was the president and the sleeping guy was "acting" President or whatever the political term would be.

I'm trying to remember who told me this story and why being drunk figured into it.

dqm either · Don't Quote Me

This is more of a Did you know than a Do you know:

My daughter had two boy names picked out for her baby before she found out she was having a girl. One boy name that I liked was Hunter Evan.

When she found out she was having a girl I asked "why don't you name her Hunter Evelyn?"

They thought it was silly to give a girl a 'boy's' name.

I insisted that the name is a girl's name if you give it to a girl.

I personally know a guy named Carrol and another guy named Sue and I don't think of them as girls.

I also know girls named Micheal, Stephen and Jack.

So anyway the Did you Know part of this rambling post is that

Richard Gere's middle name is Tiffany
And Quincy Jones' middle name is Delight

My granddaughter's name is going to be Haley Mae although I don't think they've decided on the spellings yet

RichardInTN · I believe in I.D.I.C.

There's nothing wrong with "Hunter" as a girl's name. I went to school with two girls named Hunter (dated one of them for a couple of months).

Potatochiplady · Veteran Member

dqm either wrote:
This is more of a Did you know than a Do you know:

My daughter had two boy names picked out for her baby before she found out she was having a girl. One boy name that I liked was Hunter Evan.

When she found out she was having a girl I asked "why don't you name her Hunter Evelyn?"

They thought it was silly to give a girl a 'boy's' name.

I insisted that the name is a girl's name if you give it to a girl.

I personally know a guy named Carrol and another guy named Sue and I don't think of them as girls.

I also know girls named Micheal, Stephen and Jack.

So anyway the Did you Know part of this rambling post is that

Richard Gere's middle name is Tiffany
And Quincy Jones' middle name is Delight

My granddaughter's name is going to be Haley Mae although I don't think they've decided on the spellings yet

Carrol (also spelled Carol) was traditionally a male name.

Evil Stepmother · Guru

Potatochiplady wrote:
dqm either wrote:
This is more of a Did you know than a Do you know:

My daughter had two boy names picked out for her baby before she found out she was having a girl. One boy name that I liked was Hunter Evan.

When she found out she was having a girl I asked "why don't you name her Hunter Evelyn?"

They thought it was silly to give a girl a 'boy's' name.

I insisted that the name is a girl's name if you give it to a girl.

I personally know a guy named Carrol and another guy named Sue and I don't think of them as girls.

I also know girls named Micheal, Stephen and Jack.

So anyway the Did you Know part of this rambling post is that

Richard Gere's middle name is Tiffany
And Quincy Jones' middle name is Delight

My granddaughter's name is going to be Haley Mae although I don't think they've decided on the spellings yet
Carrol (also spelled Carol) was traditionally a male name.

My dad's first name was Carroll. He went by his middle name though. There was also actor Carroll O'Connor.