DATA COLLECTION AND SAMPLING
This data collection technique asks people questions to gather information.
Survey
This table shows how often each data value appears.
Frequency Distribution Table
The number of times a score appears in a data set is called this.
Bar Graph
Integers include whole numbers and this.
Their Opposites
The absolute value of −9.
9
Asking every 5th person entering a mall is an example of this sampling technique.
Systematic Sampling
If the number 8 appears as XVI in a data set, this number represents its frequency.
This graph is best used to show changes or trends over time.
Line Graph
Which is greater: −5 or −2?
-2
Simplify: 8 + 2 × 3
14
This sampling method divides the population into groups before randomly selecting samples.
Stratified Sampling
The number of times a score appears in a data set is called this.
Frequency
Data presented in percentages to show parts of a whole is best displayed using this graph.
Pie Chart
Arrange −6, −3, −1, 0, and 4 in ascending order.
−6, −3, −1, 0, 4
Simplify: (6 + 4) ÷ 2 × 3
15