Question

MEDAL! AND FAN!
please calculate the standard Deviation.

91,655, 132,738, 189,148, 203,974, 279,978

Answer 1

isnt the standard Deviation the square root of the mean?

Answer 2

Is this --> 91,655 supposed to be two different data points 91 and then 655?

Or, is it supposed to be a single number 91,655 --? 91 thousand, six-hundred fifty-five?

The way the spacing in the problem is, I don't know whether there are 5 data points or 10?

Please clarify that. Thanks.

Answer 3

its 91,655

Answer 4

So, there are only 5 numbers of which to find the standard deviation?

Answer 5

yep

Answer 6

91,655 ; 132,738; 189,148; 203,974; 279,978

Avoid confusion by using semicolons or a vertical list.

Answer 7

Okay sorry lol

Answer 8

No worries about that.

So, these are the numbers: 91655, 132738, 189148, 203974, 279978

Answer 9

There's an online standard deviation calculator you can use but the data has to be entered in a certain way.

You can see the calculator here:
http://easycalculation.com/statistics/standard-deviation.php

Answer 10

im not sure how i would type it in?

Answer 11

Look at this. Commas have to separate the data points.

Answer 12

thanks!

Answer 13

I assume that you are finding the population standard deviation unless information to the contrary was given.

Answer 14

What do the standard deviatrions tell you about the Democratic and Republican results?

- 71922.38477

- 50109.16003

@Directrix

Answer 15

Is this question ^^^ related to the question posted at the top of this thread?

Answer 16

yes, it just want me to tell them the difference between these two standard deviations. Its from this.

Answer 17

let me check, one sec:)

Answer 18

I think its this; 64329.33658 because I gota use population standard deviation

Answer 19

I need to know the answer to this question:

Did you check this with the online calculator: Determine the standard deviation of the Democratic votes. 71922.38477

Answer 20

yep i did,

Answer 21

Okay, now read this:

Standard deviation is a measure of variation among scores. The smaller the standard deviation, the less variation in scores. The greater the standard deviation, the greater the variation among scores. In this scenario, scores votes by two political parties in several elections. So, which political party had the smallest variability?

Answer 22

@Directrix yep I did,

and this is the population standard variation I got:

- 64329.33658

- 44818.99525

I was told that I had to use population standard variation

Answer 23

I hope those are dashes and not negative signs. :)

Answer 24

lol haha no their dashes ;p

Answer 25

and the republicans had the smallest variability

Answer 26

You need to look at standard deviations, not variance.

What do the standard deviatrions tell you about the Democratic and Republican results? - 71922.38477
50109.16003

Answer 27

>>and the republicans had the smallest variability

Yes, so their voting patterns were more alike from election to election.

Answer 28

Okay!:)

so in the assignment is says this : For parts 2 to 5, you needed to show or explain how you calculated the answers.
If you used your calculator's built-in functions to find the mean and the standard deviation, then you will need to say what brand and model of calculator you were using, and what steps and keys you used to find the mean and the standard deviation. Note: If your calculator shows both a sample standard deviation and a population standard deviation, make sure you use the population standard deviation for your answer.

would I go off of population standard deviation as my answers, or standard deviation

Answer 29

im not sure if to write the populations standard deviation, or the standard deviation as my answer

Answer 30

I don't have a calculator that does those functions. I use the online calculators.

I don't understand what this means:

populations standard deviation, or the standard deviation as my answer.

Maybe you mean population standard deviation and sample standard deviation.

Answer 31

do u know? if you could open the link ull know what im talking about.

Answer 32

yea what you said, so which one would I use? if it states that on top

Answer 33

I have already looked at the link. I understand the calulator question. I just don't know the steps on a calculator because I use the online specialty calculator.

Answer 34

lol. okay so on the calculator link you gave me, which one would I use as my answer to find the standard deviation

Answer 35

This is it: http://easycalculation.com/statistics/standard-deviation.php

Scroll down and you will see the standard deviation calculator. Don't look to the left at all that stuff.

Answer 36

lol thats not what Im talking about: which one would I use to find the actual standard deviation, that my teacher wants to use.

Total Numbers:
Mean (Average):
Standard deviation:
Variance(Standard deviation):
Population Standard deviation:
Variance(Population Standard deviation):

Answer 37

>> Population Standard deviation: This is what I read in the attachment you posted.

Answer 38

okay lol

Answer 39

I hope that Democratic standard deviation number is correct. I don't know who computed that but maybe whoever did, checked it. I am not saying that it is wrong.

Answer 40

you think this might be wrong?
64329.33658 for the deviation of democratic?

Answer 41

Who cranked it out? I don't know if it is right or wrong. Rather than discuss it, you could put those numbers in the online calculator and check it. :)

Answer 42

lol its okay! thanks for taking the time to help me!:)

Answer 43

I will be sure to write u a testimony by tomorrow.

Answer 44

The votes are in ....

Answer 45

wheewph! glad that it is correct haha i literally just turned in my assignment:)

Answer 46

I'm glad, too. We should have checked it earlier but it's all good now. Wow.