Frequency Distribution and Graphs

This is the interval between two consecutive upper (or lower) class limits.

• class width

• class boundaries

• midpoints

• frequency

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

These are used as the border between two consecutive bars in a histogram. They are the intermediate value between an upper class limit and the next lower class limit.

• class limits

• class boundaries

• frequencies

• class marks

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Why is this frequency distribution incorrect?

• The fourth class width is different from the others

• There is a zero.

• Classes should overlapped.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Find the midpoints.

• 25.5, 35.5, 45.5, 55.5, 65.5, 75.5

• 20.5, 30.5, 40.5, 50.5, 60.5, 70.5, 80.5

• 21, 31, 41, 51, 61, 71

• 30, 40, 50, 60, 70, 80

Find the relative frequencies

• 37%, 76%, 92%, 95%, 98%, 100%

• 28%, 30%, 12%, 2%, 2%, 2%

• 33%, 37%, 20%, 7%, 7%, 7%

• 37%, 39%, 16%, 3%, 3%, 3%

Tags

CCSS.8.SP.A.4

This is an ogive.

• true

• false

What are the boundaries for 8 - 9?

• 8.5 - 9.5

• 7.5 - 9.5

• 8.55 - 9.55

• 8 - 9

Tags

CCSS.7.NS.A.1C

What is another name for the ogive?

• Histogram

• Frequency Polygon

• Cumulative frequency graph

• Pareto chart

Identify the class with the highest relative frequency.

• 95 - 105

• 105 - 115

• 115 - 125

• 125 - 135

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Identify the class with the least relative frequency.

• 115 - 125

• 125 - 135

• 135 - 145

• 145 - 155

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1