Statistical analysis Quiz

Which of the following describes the median of a data set?

• The data value that occurs most often

• The middle data value

• The sum of the data values divided by the total number of data values

• The difference between the greatest and least data values

Select all the statements that describe the data

shown

• Every student took at least 5 vacation days

• More than half the students took 0 to

  8 vacation days.

• There are 31 students in the class

• Two more students went on vacation

  for 5 to 8 days than did 0 to 4 days.

• Ten students took more than 8 vacation days

Is this a statistical question?

How far from work does Jeremy Live?

• Statistical- because there is only one possible answer

• Not statistical- because there is only one possible answer

• Not statistical- because there are many possible answers

• Statistical- because there are many possible answers

Is this a statistical question?

How far from work do all the employees live?

• Statistical- because there is only one possible answer

• Not statistical- because there is only one possible answer

• Not statistical- because there are many possible answers

• Statistical- because there are many possible answers

Use the Box and whisker plot to answer the questions:

What is the Maximum

• 23

• 40

• 32

• 45

What is the Median of this data set.

• 30.3

• 30

• 31

• 31.5

What is the first Quartile

• 22.5

• 22

• 35

• 35.5

What is the third Quartile

• 22.5

• 22

• 35

• 35.5

One 42-pound dog could not make it to the competition. Select all the ways the measures of center of the data set change if she had entered the competition

• Median increases

• Mode increases

• mean increases

• Median decreases

• mean decreases