I have lots of data -21 people with various info on each- I need to compare data for each via gender, age, etc.. but my problem is that I need to do this by using standarad deviations- I have tried numerous sites to figure how to do this- But every site uses charts- I need an example that is similar to my problem-using #'s not charts
For example 9 dogs with all different weights or any other #'s you wish to assign
I just need to know ( in laymans terms) step by step how to calculate it. I need to find the class avg + or - SD, Female avg + or - SD, and Male avg + or - SD
My example in my book just gives the following
n=numer of data values in
x-value of each data point (what is a data point)?
Z=mean
than calcuate the mean
subtract the mean from each x value
square each Z-x value
add all squared values and this is the sum of squares
then n-1

Then I will need to graph this info- I haven't got a clue on how to do this. Can you help?

Solution Summary

Gives step by step instruction to calculate standard deviation.

... For this CLC exercise; a) Calculate the standard deviation for the experimentally obtained values of Keq, DH, and the values calculated for DG, and DS. ...

... b) Calculate the average monthly return and its standard deviation for each ... The solution calculates average monthly return, standard deviation and beta ...

Calculating standard deviation, coefficient of variation, future value, present value, mortgage ...Calculate the standard deviation and coefficient of variation ...

... stock. b. Calculate the standard deviation of returns on each stock. c ... stock. b. Calculate the standard deviation of returns on each stock. c ...

...Standard Deviation/Average Others are calculated the same ... the following steps: 1. Calculate the expected ...Calculating Martin Products' Standard Deviation TA BLE ...

... Determine which test statistic applies, and calculate it. ... Excel this p-value can be calculated using the ... to conclude that the population standard deviation is ...

... you should have X - values (that is given above), mean and standard deviation. ... for Z-score, you can look into the Standard Normal table ...Calculating Z score. ...

... lie in the interval data is +/- 2 standard error from ... we can use mean and SEM to calculate the confidence ... The mean of these numbers was calculated as well as ...

... SE = SQRT(variance) = SQRT(2) = 1.414 Calculate z = [0 ...Standard Deviation, Exponential Distribution and Expected Values are ... the warranty period is calculated by ...