Compare Populations

Use the box-and-whisker plots to determine which statement is not true.

• The interquartile range of the men’s ages is greater than the interquartile range of the women’s ages.

• The youngest member of the club is a woman.

• The median of the men’s ages is greater than the median of the women’s ages.

• The range of the men’s ages is greater than the range of the women’s ages.

The box-and-whisker plots show the test scores of two different classes. Which class had a greater range of test scores?

• There is no range.

• 2nd period

• the ranges are the same

• 1st period

Which statements are true. Select all the correct statements.

• Howard County Little League has 50% of its data above 150 pitches and Wayne County Little League has 25% of its data above 150 pitches.

• Wayne County Little League has 50% of its data above 150 pitches and Howard Little League has 25% of its data above 150 pitches.

• Wayne County Little League has a higher lower quartile than Howard County Little League.

• Howard County Little League has a larger range the Wayne County Little League.

• The Inner Quartile Range for Wayne County is smaller than the Inner Quartile Range for Howard County.

The spread of 1st period class is greater than the spread of 2nd period class.

• TRUE

• FALSE

7.SP.1

• A

• B

• C

• D

Choose the true statement(s) about the census and sample shown.

• The sample could be considered too small.

• The sample is biased because is does not include everyone.

• The sample is representative of the population's sub-groups.

Both 1st and 2nd period classes have Q3 equal to 90

• TRUE

• FALSE

The lower extreme (minimum) for 1st

period is 10 greater than the lower extreme (minimum) for 2nd period class.(True or False) Explain.

Which statement correctly describes the shapes of the dot plots for cars and SUVs?

• SUVs: symmetrical
  Cars: skewed left

• Both are skewed left

• Both are symmetrical

• SUVs: skewed right
  Cars: Skewed left

The box-and-whisker plots show the test scores of two different classes. Write an inference about the two class periods.