MATH REVIEWER

Which type of data describes characteristics that cannot be measured numerically, such as color, brand,

or type?

• Discrete data

• Continuous data

• Qualitative data

• Quantitative data

Which sampling technique divides a population into groups and selects samples from each group to

ensure representation?

• Stratified sampling

• Simple random sampling

• Convenience sampling

• Systematic sampling

What is the main purpose of a frequency distribution table?

• To show trends over time

• To compare parts of a whole

• To display exact data values only

• To organize data and show how often each value occurs

A frequency table shows the class interval 70–74 has a frequency of 12. What does this mean?

• There are 12 class intervals

• There are 12 different scores

• Twelve data values fall within 70–74

• The score 74 occurred 12 times

Which type of graph is used to represent data by showing how a whole is divided into parts?

• Bar graph

• Line graph

• Pie chart

• Histogram

Which graph is most appropriate for showing changes in temperature over several days?

• Pie chart

• Line graph

• Histogram

• Stem-and-leaf plot

A bar graph shows the number of absences per grade level. Which feature allows correct comparison

between the bars?

• The title of the graph

• The scale on the vertical axis

• The color of the bars

• The order of the categories

Which graph would best represent the percentage distribution of students by section in a grade level?

• Line graph

• Bar graph

• Pie chart

• Histogram

Which graph is specifically used to display grouped continuous data using class intervals?

• Bar graph

• Histogram

• Pie chart

• Line graph

What does the height of a bar in a bar graph represent?

• The total number of bars

• The category label

• The frequency or value of the data

• The time interval