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Suppose we want to talk to only players who have been in the NFL for less...

Suppose we want to talk to only players who have been in the NFL for less than 5 years. We survey these players at the beginning of the season and ask them how many years they have played for the NFL so far:

Years in the NFL

Frequency

0

653

1

235

2

443

3

342

4

273

            a. Find the average number of years a player in this sample has been in the NFL.

            b. Find the standard deviation of this distribution.

math   Statistics-And-Probability   
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