Prob Stats Section 2.1

If you find the distance between the lower (or upper) limits of consecutive classes, you are finding:

• lower class limit

• class (interval)

• upper class limit

• class width

True or False: When finding the class width, round up or down to the nearest whole number.

• True

• False

If you find the average of the upper and lower class limits, you are finding:

• midpoint

• class boundaries

• class width

• frequency

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

If you find the portion or percent of data that falls in that class, you are finding:

• frequency

• relative frequency

• cumulative frequency

Which of the following are NOT TRUE about frequency histograms?

• Bars are equal width.

• There needs to be a title.

• Frequency or relative frequency is on the vertical axis.

• There are equally spaced gaps between the bars.

True or false: An Ogive graph is a line graph displaying cumulative frequency of each class.

• True

• False

If one of the classes is 17 - 27, what is the midpoint?

• 21

• 22

• 23

• 44

If there are a total of 50 data numbers, and one class has a frequency of 9, what is the relative frequency?

• 0.18

• 0.09

• 9

• 41

To find class boundaries: ______ 0.5 from each upper limit and ______ 0.5 from each lower limit.

• divide; multiply

• multiply; divide

• add; subtract

• subtract; add

Base your response on the following data:

3, 5, 2, 5, 4, 7, 1, 0, 6, 4, 8, 5, 3, 2, 4, 5, 9.

How many times were 6-8 goals scored?

• 2

• 3

• 1

• 4