The following sidebyside stemplot displays the total number

The following side-by-side stemplot displays the total number of points scored per Super Bowl football game for the first 41 Super Bowls (from 1967–2007), separated according to the first 20 games (1967–1986) and the next 21 games (1987–2007):

1. Does this stemplot enable you to determine how many points were scored in the first Super Bowl? If so, what is this number?

2. Does this stemplot enable you to determine how many of the first 41 Super Bowls had a total of 37 points? If so, what is this number?

3. Does this stemplot provide evidence that Super Bowl games have become more high-scoring over time, more low-scoring over time, or neither? Explain.

4. True or false? The three lowest-scoring Super Bowls were all played among the first 20 games.

5. True or false? The three highest-scoring Super Bowls were all played among the next 21 games.

Solution

(1)

No, from stem and leaf plot we can not find out which is score of the first Super Bowl.

(2)

Yes there are 3 of the first 41 Super Bowls (2 in first 20 games and 1 in next 21 games) had a total of 37 points.

(3)

yes,  this stemplot provides an evidence that Super Bowl games have become more high-scoring over time. A swe can see the games in \"next 21 games\" have higher scores than in first 20 games.

(4)

True. The three lowest-scoring Super Bowls were all played among the first 20 games with scores 21, 22, 23

(5)

True. The three highest-scoring Super Bowls were all played among the next 21 games with scores 75, 69, 69