Lesson 24 Practice Quiz B

The dot plots show the number of cheese and pepperoni pizzas that were sold each day over a 15-day period.

The difference between the medians is _____ times the IQR for cheese pizzas sold.

The dot plots show the number of cheese and pepperoni pizzas that were sold each day over a 15-day period.

The difference between the medians is _____ times the IQR for pepperoni pizzas sold.

The box plot shows the number of bonus points students in Mrs. Fuller's odd and even day classes earn over a 5-day period. Raj says that the students in Mrs. Fuller's odd day classes earned significantly more bonus points than the students in her even day classes.

Determine if the statement below about Raj's inference is true or false:

Both classes have the same median, so the difference in bonus points is not significant.

• True
• False

The box plot shows the number of bonus points students in Mrs. Fuller's odd and even day classes earn over a 5-day period. Raj says that the students in Mrs. Fuller's odd day classes earned significantly more bonus points than the students in her even day classes.

Determine if the statement below about Raj's inference is true or false:

The difference in the maximum values on the two graphs indicates a significant difference in bonus points between the classes.

• True
• False

The box plot shows the number of bonus points students in Mrs. Fuller's odd and even day classes earn over a 5-day period. Raj says that the students in Mrs. Fuller's odd day classes earned significantly more bonus points than the students in her even day classes.

Determine if the statement below about Raj's inference is true or false:

The difference in the IQRs is one point, so the difference in bonus points is not significant.

• True
• False

Dylan measured the heights of 40 trees on a college campus. He used a random sample of 20 trees in direct sunlight and 20 trees in the shade. The dot plots show the heights of the trees in each sample.

Which inference can Dylan make based on the dot plots?

• The trees in the shade have less consistent heights and generallly do not grow as ttall as the trees in the direct sunlight.

• The trees in the shade have less consistent heights and generally grow taller than the trees in the direct sunlight.

• The trees in the shade have more consistent heights and generally do not grow as tall as the trees in the direct sunlight.

• The trees in the shade have more consistent heights and generally grow taller than the trees in the direct sunlight.

The daily high temperatures during the month of August in Centerville and Port City were recorded over a period of 10 years. The double box plot displays these data.

To decide which city is generally warmer in August, compare the ​ (a)   . The city of ​ (b)   is generally warmer.

• medians
• Centerville
• ranges
• IQRs
• Port City

The daily high temperatures during the month of August in Centerville and Port City were recorded over a period of 10 years. The double box plot displays these data.

To decide which city has more variability in August, compare the ​ (a)   . The city of ​ (b)   is more consistent.

• medians
• Centerville
• ranges
• IQRs
• Port City

Which pair of data sets would show the MOST visual overlap when plotted on dot plots?

• Data Set A: mean = 35, MAD = 2

  Data Set B: mean = 35, MAD = 3

• Data Set A: mean = 60, MAD = 4

  Data Set B: mean = 60, MAD = 7

• Data Set A: mean = 25, MAD = 4

  Data Set B: mean = 25, MAD = 8

• Data Set A: mean = 50, MAD = 9

  Data Set B: mean = 50, MAD = 11