Question

Fifty pro-football rookies were rated on a scale of 1 to 5, based on performance at a training camp as well as on past performance. A ranking of 1 indicated a poor prospect whereas a ranking of 5 indicated an excellent prospect. The following frequency distribution was constructed. Rating 1 2 3 4 5Frequency 3 7 16 21 3 How many of the rookies received a rating of 4 or better? Number of Rookies?

Answer 1

The number of rookies who scored 4 or better is 24.

Explanation:

the frequency distribution of for the ranking of pro-football rookies is:

Ranking Frequency

1 3

2 7

3 16

4 21

5 3

Compute the number of rookies who scored 4 or better as follows:

No. of rookies with rankings 4 or more = No. of rookies with rank 4 +

No. of rookies with rank 5

= 21 + 3

= 24

Thus, the number of rookies who scored 4 or better is 24.