Frequency Table or Histogram

What is the cumulative frequency of the 3rd class in this distribution?

• 1

• 14

• 15

• 24

Given the data below, what should be the class width to have 9 classes?

• 30

• 147

• 148

• 149

What percent of people drink 4-7 cups of coffee per week?

• 44.4%

• 11.1%

• 3%

• 16.7%

Emily is making a histogram for the data:
 12, 94, 61, 24, 77, 36, 56, 83, 7, 34, 45, 75, 86, 42, 91, 78, and 96.  She wants to make 10 classes. What should the class width be?

• 8

• 9

• 10

• 17

According to the portion of the frequency table given, how many people have an MBA?

• 9

• 60

• 20

• not enough information

How many students scored between a 86 and a 90?

• 1

• 3

• 6

• 10

This tables shows what type of frequency distribution?

• Categorical Frequency Table

• Grouped Frequency Table

• Ungrouped Frequency Table

• Percent Frequency Table

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

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

• class width

• class boundaries

• midpoints

• frequency

Why is this frequency distribution incorrect?

• The fourth class width is different from the others

• There is a zero.

• Classes should overlapped.