Question

Write out the formulas and show your work.
You're given a sample with n=8 measurements: 3, 1, 5, 6, 4, 4, 3,5
A. Calculate the range (maximum value ­ minimum value).
B. Calculate the sample mean.
C. Calculate the sample variance and sample standard deviation.
D. The range is approximately how many sample standard deviations?

Answer 1

so what are the max and min values in that set?

Answer 2

is it 1 and 5?

Answer 3

i mean 6

Answer 4

1 is min
and 6 is the max , right

Answer 5

so the range is ...

Answer 6

It seems your home work

Answer 7

5?

Answer 8

@Rohangrr

Answer 9

Oh, I'm sorry, I get the first part and second part, just not the standard deviation and sample variance part and the question under it

Answer 10

yeah for A the range is is 5

what did you get for B

Answer 11

3.875?

Answer 12

is the mean

Answer 13

@rohangrr

Answer 14

good work

Answer 15

yay!

Answer 16

hello? still with me?

Answer 17

\[s^2=\frac{1}{n-1}\sum(X-\overline X)^2\]

Answer 18

Is the formula for standard deviation?

Answer 19

s is standard deviation (for a sample)

Answer 20

oh okay

Answer 21

Can you please guide me through how to complete it and what the symbols mean?

Answer 22

i can do standard deviation by i get too confused when it is for a sample only

i used \(\overline X\) for average

Answer 23

okay and average would be the mean?

Answer 24

I'm sorry I really don't understand this still.. haha

Answer 25

I think this is the equation, but I don't get it....

Answer 26

yeah average = mean