Question

Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth.
20, 16, 18, 9, 20, 16
A. mean = 16.1;
standard deviation = 12.7
B.
mean = 16;
standard deviation = 12.7

C.
mean = 16;
standard deviation = 3.6
D.
mean = 16.1;

Answer 1

so use it!

Answer 2

how do i do standard deviation

Answer 3

add all those up and divide it by 6

Answer 4

thats mean

Answer 5

i need to know standard deviation

Answer 6

measures the amount of variation or dispersion from the average

Answer 7

ok.. how do i find it out

Answer 8

what do i need to do

Answer 9

1.Calculate the mean of your data set.

2.Subtract the mean from each of the data values and list the differences.

3.Square each of the differences from the previous step and make a list of the squares.
•In other words, multiply each number by itself.
•Be careful with negatives. A negative times a negative makes a positive.

4.Add the squares from the previous step together.

5.Subtract one from the number of data values you started with.

6.Divide the sum from step four by the number from step five.

Answer 10

7.Take the square root of the number from the previous step. This is the standard deviation.
•You may need to use a basic calculator to find the square root.
•Be sure to use significant figures when rounding your answer.

Answer 11

ok ..... this is lil confusing but ill try

Answer 12

ok :)

Answer 13

i got 12.7

Answer 14

i got the answer choice "A"

Answer 15

yes

Answer 16

awsome thank you !!!!