MATH 7 REVIEWER

DATA COLLECTION AND SAMPLING

100

This data collection technique asks people questions to gather information.

Survey

300

Asking every 5th person entering a mall is an example of this sampling technique.

Systematic Sampling

500

This sampling method divides the population into groups before randomly selecting samples.

Stratified Sampling

DATA ORGANIZING

100

This table shows how often each data value appears.

Frequency Distribution Table

300

If the number 8 appears as XVI in a data set, this number represents its frequency.

16

500

The number of times a score appears in a data set is called this.

Frequency

DATA PRESENTATION

100

The number of times a score appears in a data set is called this.

Bar Graph

300

This graph is best used to show changes or trends over time.

Line Graph

500

Data presented in percentages to show parts of a whole is best displayed using this graph.

Pie Chart

INTEGERS

100

Integers include whole numbers and this.

Their Opposites

300

Which is greater: −5 or −2?

-2

500

Arrange −6, −3, −1, 0, and 4 in ascending order.

−6, −3, −1, 0, 4

OPERATIONS

100

The absolute value of −9.

9

300

Simplify: 8 + 2 × 3

14

500

Simplify: (6 + 4) ÷ 2 × 3

15