Sample This!
What type of sampling is used when a researcher selects every 10th student from a school roster?
Systematic Sampling
A score of 92 appeared 8 times. What does 8 represent?
Which chart shows parts of a whole using slices?
Pie Chart
Arrange these integers in ascending order: -7, 3, 0, -2, 5.
-7, -2, 0, 3, 5
What is the absolute value of -12 + 7
5
What type of sampling involves picking 3 students from each class randomly for a survey?
Stratified Sampling
What type of table organizes data into categories with their frequencies?
Frequency Distribution Table
Which type of chart uses bars to represent frequency of categories?
Bar Graph
TRUE or FALSE: The sum of a positive integer and a negative integer is always negative.
FALSE
What is the result of -5 + 8 - 3 + (-2)?
What type of sampling occurs when a journalist surveys people on the street who are willing to talk?
Convenience Sampling
How many students borrowed 2 books if the data are 1,2,2,3,1,4,2,3,1,2,3,4,5,2,1,3,2,4,3,2?
7 students
Which type of graph best shows trends or changes over time?
Line Graph
-8 + 3 × [2² - (5 - 7)²] ÷ 3
-8
Evaluate: 5 + 2 × (6 - 4)² ÷ 2
9
Which method of data collection requires the researcher to systematically watch and record the behavior of respondents in their natural environment without interfering?
Observation
Organize the numbers 1, 2, 2, 3, 1 into a frequency table.
1 | 2
2 | 2
3 | 1
The test scores of 15 students are: 45, 52, 48, 51, 47, 53, 49, 50, 52, 46, 48, 51, 47, 50, 49.
Represent the data using a stem-and-leaf plot.
Stem | Leaf
4 | 5 6 7 7 8 8 9 9
5 | 0 0 1 1 2 2 3
If a submarine is 30 m below sea level, rises 12 m, then descends 5 m, what is its final position?
-23 m
What is the result of (-3 + 8) × (2 - 5) ÷ (-3)?
5
What method of data collection involves asking students structured questions about their study habits to gather information directly from them?
Questionnaire/Survey
It is used to organize data and to display it graphically.
Statistical Table
What percentage of students borrowed 3 books if the data are 1,2,2,3,1,4,2,3,1,2,3,4,5,2,1,3,2,4,3,2?
25%
What are the three consecutive integers whose sum is -6?
-3, -2, -1
Why is absolute value always nonnegative?
Because it measures distance.