Test: AP Statistics

A bird watcher observed how many birds came to her bird feeder for four days.  These were the results:

Day 1: 15

Day 2: 12

Day 3: 10

Day 4: 13

1.

What is the variance of the number of birds that visited the bird feeder over the four days?

 

1/40 questions

0%
Learning Tools by Varsity Tutors