Stats

What does this frequency polygon show you?

• Fedex carried a higher frequency of heavy packages

• The mode weight of package for Fedex is between 50 and 60kg.

• UPS carried the most packages

• UPS carried the heaviest package

This data is normally distributed.  What percent of the data is in the shaded region?

• 68%

• 95%

• 99.7%

• 50%

This data is normally distributed.  What percent of the data is in the shaded region?

• 68%

• 32%

• 16%

• 50%

What is the median?

• The middle point of an ordered set of data.

• The number that occurs most often.

• The average of a distribution.

• The middle of the road.

Find the mode:

-3, 2, -3, 7, 0, -3

• -3

• 0

• -1.5

• none

Is this a histogram?

• Yes, this is a histogram.

• No, this is a bar graph.

What is a frequency table?

• Where results of a survey are recorded

• Is sometimes known as a tally table

• Records the numbers of responses in categories

• All of these

This is a frequency polygon.

• True

• False

Is this a frequency polygon?

• Yes

• No

What information do you need to plot a frequency polygon?

• Midpoint and Frequency

• Age and Frequency

• X and Y

• First point in the interval and frequency