Summarizing Data Sets with Statistics

Question 1

Which set has the greatest range?

Revolt · Accepted Answer

{12, 6, 24, 20, 44, 15, 29}

Question 2

What is the range of this set of test scores?{76, 82, 54, 100, 100, 82, 100, 93, 100, 93}

Revolt · Accepted Answer

46

Question 3

Janelle made ordered lists of the heights, in inches, of the students in Ms. Carver’s and Mr. Wright’s homerooms. She found the two lists had the same median value, but the list from Ms. Carver’s class showed greater variability. If the shortest student in Mr. Wright’s homeroom is 48 inches tall and the tallest student is 64 inches tall, what could be the heights of the shortest and tallest students in Ms. Carver’s homeroom?

Revolt · Accepted Answer

47 inches and 66 inches

Question 4

Ty and Gajge are both football players who averaged 4 yards per run in yesterday’s football game. The statistics from that game are shown in the table below.Player Name# ofCarriesAverage Yards Gained Per RunLongest Run(yards)Shortest Run(yards)Ty154.062Gajge104.0192Which statement best describes the data?

Revolt · Accepted Answer

The lengths of Gajge’s runs have greater variability because there is a greater difference between his longest and shortest runs.

Question 5

Swati played eight basketball games this season. Her point totals for each game were 8, 14, 4, 7, 6, 14, 4, and 7. What was the mean number of points she scored per game?

Revolt · Accepted Answer

8

Question 6

The head of the math department compared the scores of students in two classes on the Chapter 2 test. He found that the mean score of both classes was the same. He also found that there was greater variability in the scores of Ms. Biren’s students than in the scores of Mr. Hayes’s students. Which quality of the data sets would lead the department head to that conclusion?

Revolt · Accepted Answer

The range of scores in Ms. Biren’s class is greater than the range of scores in Mr. Hayes’s class.

Question 7

Rosa’s work finding the median of a set of test scores is shown below.Which statement best describes Rosa’s first error?

Revolt · Accepted Answer

She should have reordered the elements from least to greatest.

Question 8

The list below shows the prices of T-shirts at a clothing store.{8, 10, 10, 12, 15, 15, 18}Which statement best describes the mean of this set?

Revolt · Accepted Answer

the sum of the prices divided by 7

Question 9

The table below shows the number of cars sold each month for 5 months at two dealerships.Cars SoldMonthAdmiral AutosCountywide CarsJan49Feb1917Mar1514Apr1010May1715Which statements are supported by the data in the table? Check all that apply.

Revolt · Accepted Answer

The mean number of cars sold in a month is the same at both dealerships.; The total number of cars sold is the same at both dealerships.; The data for Admiral Autos shows greater variability.

Question 10

Jada is studying the variability of her quiz scores. Which pair of statistics best describes the spread of scores?

Revolt · Accepted Answer

range and interquartile range

Summarizing Data Sets with Statistics Answers

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