The following are all 6 quiz scores of a student in a statistics course. Each quiz was graded on a 10-point scale. 8,6,9,9, 8, 8

Question

3 years ago

14

Assuming that these scores constitute an entire population, find the standard deviation of the population. Round your answer to two decimal places.

2 answers:

Rufina [12.5K] · Answer 1 · 2022-11-04T05:11:22+03:00

8 0

Answer:

mean=6+8+8+9+9+10divided 6 =

Reika [66] · Answer 2 · 2022-11-04T07:03:27+03:00

Reika [66]3 years ago

8 0

Answer:

1.

Step-by-step explanation:

The mean score is (8+6+9+9+8+8)/ 6

= 48/8

= 8.

Deviations from the mean are 0 , -2, 1, 1, 0, 0

Squares of these deviations are 0, 4, 1, 1, 0, 0

So the variance = (0 + 4 + 1 + 1 + 0 + 0)/ 6 = 1

Standard deviation = √1 = 1.