Question

Help get me started on this?

Answer 1

4.What are the mean, variance, and standard deviation of these values? Round to the nearest tenth.

11, 11, 3, 1, 11, 11


mean = 8
variance = 2.1
standard deviation = 4.7

mean = 11
variance = 2.1
standard deviation = 4.3

mean = 11
variance = 2.1
standard deviation = 4.3

mean = 8
variance = 18.3
standard deviation = 4.3

Answer 2

@vivianrush Can you find the mean?

Answer 3

It's the average of all the values

Answer 4

i add them all together right?> and then divide

Answer 5

which is 8

Answer 6

either A or D.

Answer 7

@ash2326

Answer 8

yes, mean is 8 correct :)

Answer 9

how do i find variance?

Answer 10

Variance is the mean of the squared deviations
(11-8)^2, (11-8)^2, (3-8)^2 and so on

first find the squared deviations for each value, it's (value-mean)^2

Answer 11

9 for the first two and 25 for the second

Answer 12

so it;s
9, 9, 25, 49, 25, 25
Find the average of these

Answer 13

23.7

Answer 14

sorry
9,9, 25, 49, 9, 9

Answer 15

18.3

Answer 16

Good, standard deviation is the square root of variance. Can you find that