Based on a survey of over 10,000 households, the number of televisions in the home was recorded as given in the table below.

Question

Based on the data, find the expected number of televisions in a home.

 

Televisions     Percentage

0                 10%

1                 15%

2                 25%

3                 20%

4                 15%

5                 10%

6                  5% 

Answer 1

First, multiply the number of television sets by each percent:

0 * 10% = 0

1 * 15% = .15

2 * 25% = .5

3 * 20% = .6

4 * 15% = .6

5 * 10% = .5

6 * 5% = .3

Then add all these products. The result is 2.65, but since you can't have a fractional TV set, you should round this up to 3.