Data and Stat

Which statement is best supported by the information in the histogram?

• A. A total of 40 customers participated in this survey.

• B. Less than half of the customers have more than one pet.

• C. There are exactly 20 customers who have less than one pet.

• D. More than half of the customers have at least two pets.

The range is ______ ,and the median is _____.

• A. Range is 11 ft.

  Median is 11 ft.

• B. Range 11 ft.

  Median 13 ft.

• C. Range 11 ft.

  Median 11.5 ft.

Which statement best describes the data represented in the dot plot?

• The data distribution has gaps.

• The data is symmetrical.

• The peak of the data is at 9.

The mean of the data set can be found by...

• finding the sum of the numbers and then dividing by the total amount of numbers in the data set

• subtracting the minimum from the maximum

• choosing the middle number

• choosing the number that occurs most

Which group has a smaller interquartile range?

• Group A

• Group B

• They're the same.

• You can't tell.

What is the mode?

• The middle number in an ordered set of data.

• The difference between the greatest and least amount in the data set

• The value that occurs the most often in a data set

• The sum of all the numbers in a data set divided by the size

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number

• They are both the median

• Find the mean of the two numbers

• None of the above

Find the mean of these numbers:

5, 11, 2, 12, 4, 2

• 2

• 6

• 4.5

• 5

Lucy collects data from a random sample of seventh-graders. Out of 40 respondents, 7 attend after-school programs. Of the 200 seventh-graders attending Lucy’s school, how many would be expected to attend afterschool programs?

Maria collects data from a random sample of 7th graders in her school and finds that 16 out of 20 7th graders participate in after-school activities. How many students should Maria expect to participate in after-school activities if 240 total 7th graders attend Maria's school? Write the numerical answer only.