Probability & Statistics - Chapter 2 Review

Which of the following is false about histograms?

• bars must touch

• y-axis is in terms of frequency

• may be used for both numerical and categorical data

• each data value falls into exactly one class

Tags

CCSS.HSS.ID.A.1

A frequency polygon is formed by connecting the:

• midpoints

• class limits

• class boundaries

• relative requencies

What is the formula for relative frequency?

• range / # of classes

• class frequency / total frequency

• highest value - lowest value

• class limit +/- 0.5

Tags

CCSS.HSS.ID.A.1

CCSS.6.SP.B.4

What is the formula for class width?

• range / # of classes

• class frequency / total frequency

• highest value- lowest value

• limit +/- 0.5

What is the formula for range?

• (lower + upper) / 2

• class frequency / total frequency

• highest value - lowest value

• limit +/- 0.5

Tags

CCSS.HSS.ID.A.1

CCSS.6.SP.B.4

What is the formula to find a class boundary?

• range / # of classes

• class frequency / total frequency

• highest value - lowest value

• class limit +/- 0.5

What is the formula to find the midpoint?

• highest value - lowest value

• (lower + upper) / 2

• class frequency / total frequency

• range / # of classes

Tags

CCSS.HSS.ID.A.1

CCSS.6.SP.B.4

What is an ogive?

• relative frequency histogram

• cumulative frequency distribution

• bar graph

What is the class width of a data set with 4 classes that has a range of 20?

• 3

• 4

• 5

• 6

When using your calculator to create a histogram what should be plugged in to "Xscl" under the window tab?

• lowest class limit

• highest class boundary

• class width

• some # larger than the maximum data value

Tags

CCSS.HSS.ID.A.1