Use the dot plot to solve for the mean, median, IQR, and range. Round to the nearest tenth if necessary.
Mean: _______
Median: _______
IQR: _______
Range: _______
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
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Identify the type of sampling method used in each scenario.
The principal uses a random number generator to select 50 students. Those students were asked how often they ate dessert every month.
A local restaurant wants to assess customer satisfaction with their service. They request customers to fill out a survey and offer a 10% discount as an incentive.
A survey taker asked every fourth boy on a middle-school roster what brand of shoes he preferred to wear
Mr. Jones wants to know what subject 7th grade students prefer most. He asks his class what they're favorite subject is in school.
Simple random
Systematic random
Convenience
Voluntary
Two games are played during a bowling tournament. The box-and-whisker plots show the scores of the bowlers in each game. Identify the valid inference(s).
During game 1, the players had a greater median score than in game 2.
The variation in scores was about the same between games 1 and 2.
During game 2, the players had a lower mean score than in game 1.
During game 1, the players had a much lower mode than in game 2.
The variation in scores was much greater in game 1 than game 2.
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
Is this a statistical question?
yes
no
categorize the following questions into the correct categories
Which football game had the most touchdowns this season?
How many bread rolls did each person at the table eat?
