chapter 12 quiz

The prices of karaoke machines at 6 different stores are $77, $85, $78, $72, $80 and $118. What is the outlier in the data set?

• $74

• $79

• $85

• $118

The number of points a basketball players scored each game for one week is recorded. Which is NOT a statistical question for the situation.

• What is the greatest number of points the basketball player scored?

• What is the least number of points the basketball player scored?

• How many points did the basketball player score in the first game of the week?

• How many total points did the basketball player score during the week?

Every day for one week, Keller recorded the number of customers who bought blueberry muffins at his cafe. The customer counts are 13, 8, 12, 15, 11, 20 and 19. What is the mean of the data?

• 11

• 12

• 13

• 14

Khalifa has a bookcase with 5 shelves. There are 11, 12, 19, 11, and 7 books on each of the 5 shelves. If she rearranges the books so that each shelf has the same number of books, how many books will be on each shelf?

• 10

• 11

• 12

• 13

The amounts of money Gillian earned each week from babysitting are $5, $10, $20, $10, $15, $5, $42, and $5. How is the mean of the data set affected when the outlier is removed?

• The mean is unchanged.

• The mean increases by $4.

• The mean decreases by $4.

• The mean increases by $1.

Todd and his friend collect coins. The numbers of coins in their collections are 45, 73, 86, 24, 57, 100, 58, 86, 68 and 74. What is the median of the data?

• 67.1

• 70.5

• 76

• 86

The low temperatures for the week in Carrollton, in degrees Fahrenheit, were 17, 41, 11, 14, 11, 13, and 15. What is the mean of the temperatures WITHOUT the outlier?

• 11.6 degrees

• 13.5 degrees

• 14.5 degrees

• 17.4

The length of each movie in a DVD collection is recorded. Which his NOT a statistical question for the situation?

• What is the length of the shortest movie?

• What is the length of the longest movie?

• How many of the movies are more than 2 hours long?

• What actors star in the longest movie?

Which of the following could you NOT use to find the mean of a data set?

• a complete list of the data

• a dot plot of the data

• the sum of the data and the number of data values

• a histogram

Sasha surveys students from herhomeroom about the number of siblings each student has. The results are 1,0, 2, 2, 3, 0, 1, 1, 4, and 5. What is the mode(s) of the data?

• 1.5

• 1

• 0 and 2

• 1 and 2