Statistics

Xander wants to be elected president of his 9th grade class. He wants to determine his chance of winning the election. Which will be the best way for him to determine if he will win?

• Survey a random sample of 9th grade students

• Survey the boys in his neighborhood

• Survey all the girls on the cheerleading sqad

• Survey all the 9th grade teachers

Mr Holland gives his class a test. The results are: 34%, 44%, 75%, 21%, 98%, 86%, 71%, 76%, 63%, 55% How many students scored above the mean percentage?

• 4

• 5

• 6

• 7

Find the median, first quartile, third quartile, and interquartile range of the data.

• Median: 54

  First Quartile: 49

  Third Quartile: 67

  IQR: 18

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 21

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 22

• Median: 54

  First Quartile: 49

  Third Quartile: 69

  IQR: 20

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10

• 10

• 12

• 10 and 12

• No Mode

Which data set goes with this stem-and-leaf plot?

• 41, 52, 57, 58, 65, 66, 70, 75, 78, 78, 78, 80,

  80, 95

• 41, 52, 56, 58, 66, 70, 75, 78, 78, 78, 80, 80,

  95, 56

• 41, 52, 57, 58, 65, 66, 70, 75, 78, 78, 78, 78,

  80, 80

• 52, 52, 57, 58, 65, 66, 70, 75, 78, 78, 78, 80,

  80, 95

This is the test scores for two different classes. Which class has a greater mode?

• 2009 class

• 2010 class

• neither

• Same

What is the range of the data?

• 80

• 10

• 70

• 40

• 30

What is the range of Susie's Test Scores?

• 40

• 30

• 15

• 25

What is the median?

• 35

• 30

• 25

• 50

Find the median.
12, 5, 9, 18, 22, 25, 5

• 9

• 8

• 12

• 18