Unit 6 Statistics Review

The team size for seven football teams is shown.

8, 15, 20, 25, 30, 35, 38

Which team size affects the range of all 7 classes the most?

• 38

• 25

• 8

• 30

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Which box and whisker plot has a range of 11 and a median of 8?

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Which of the following is the BEST description of the data?

• The mean is about 29.1, there is a peak at 30, gaps at 28 and 32, data is not symmetrical

• The median is 29, there is a cluster from 26 – 31, peak at 29, no outlier

• The mode is 29, there is a gap from 28 – 31, peak at 29, no outlier

• The range is 7, there is a peak at 29, cluster from 29 – 31, gaps at 28 and 32

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Eli, Justin, Harry, and Paris each conducted surveys on how many pets their neighbors had in their homes. Each student determined the accuracy of the following statement.

"All measures of central tendency must appear as a number in the set of data collected."

Which student's statement is CORRECT?

• Eli says this is sometimes true because the mean and median may or may not be visible in the set of data, but the mode is always visible if present.

• Justin says this is sometimes true because the mean and mode may or may not be visible in the set of data, but the median is always in the set of data.

• Harry says this is always true because all the measures of central tendency also have to be numbers that are visible in the data set.

• Paris says this is never true because all the measures of central tendency are never number that are visible in the set of data

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The 100-meter dash time below represent the top five. What are the mean and median for the data?

9.8, 9.9, 9.5, 10.1,10

• Mean 9.86, Median 9.8

• Mean 9.86, Median 9.5

• Mean 9.5, Median 10

• Mean 9.86, Median 9.9

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Students will receive treats for scores at or above the upper quartile. What is the lowest score a student can get and still receive an award?

• 85

• 80

• 98

• 93

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Don raises dogs. The heights, in centimeters, of Don's dogs are listed.

90,98,96,95,97,96,99,91,93,98,96,97,95,96

Which of the following statements accurately describes the shape, center, and spread of the data?

• The mode is 96, there are gaps at 92 and 94, the distribution is skewed left, and 90 and 91 are outliers

• The range is 9, there is a gap at 94, the distribution is skewed right, and there is peak at 96.

• The mean is about 95.5, there are no gaps, the distribution is symmetrical, and 90 is an outlier.

• the mean is about 95.5, there are no gaps, the distribution is symmetrical, and 90 is an outlier.

Jalen says that 60% of his teammates are over 70 inches. Is Jalen’s statement correct?

73, 61, 62, 59, 75, 60, 74, 75, 78, 69, 70

• No, because there are 5 players with a height greater than 70 inches and that’s about 55% of the players

• Yes, there are at least 9 players with a height of at least 70 inches and that is 60% of the players.

• No, there is one player with a height of 70 inches and that is 9% of his teammates.

• Yes, because the median height of the ponies is 60 and 60% of the ponies would be taller.

Identify the minimum, first quartile, median, third quartile, and maximum for the data.

59, 60, 61, 62, 69, 70, 73, 74, 75, 75, 78

• Minimum 59, first quartile 60, median 70, third quartile 74, maximum 78

• Minimum 59, first quartile 61, median 70, third quartile 75, maximum 78

• Minimum 59, first quartile 61, median 70, third quartile 74, maximum 78

• Minimum 59, first quartile 60, median 70, third quartile 74, maximum 78

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