Question

The data set represents the number of siblings of each student in Mrs. Daniels class.
0 , 1 , 3 , 3 , 2 , 1 , 2 , 1 , 1 , 4 , 2 , 3 , 2 , 2 , 1 , 0 , 3 , 2
What is the average (mean) number of siblings?

a
33
b
1.5
c
2
d
1.83

Answer 1

To find the average (mean) number of siblings, add up all the numbers in the data set and then divide by the total number of values.

0 + 1 + 3 + 3 + 2 + 1 + 2 + 1 + 1 + 4 + 2 + 3 + 2 + 2 + 1 + 0 + 3 + 2 = 31

Now divide by the total number of values in the data set, which is 18:

31 / 18 = 1.72

Therefore, the average (mean) number of siblings is 1.72, rounded to two decimal places.

The closest option is d) 1.83.