STAAR REVIEW 2025

Front

What is a stem-and-leaf plot?

Back

A stem-and-leaf plot is a method of displaying quantitative data in a graphical format, similar to a histogram, to retain the original data values while showing their distribution.

Front

How do you find the median of a data set?

Back

To find the median, arrange the numbers in ascending order and identify the middle number. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What does the term 'interval' mean in data representation?

Back

An interval is a range of values that groups data points together, often used in histograms or frequency distributions.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

How do you determine the frequency of a data interval?

Back

Frequency is determined by counting how many data points fall within a specific interval.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a data set.

Front

What is the purpose of a histogram?

Back

A histogram is used to represent the frequency distribution of numerical data, showing how many data points fall within each interval.

Front

What does it mean for a data point to be 'greater than or equal to' a certain value?

Back

It means that the data point is either larger than or exactly equal to that value.

Front

How do you interpret a bar graph?

Back

A bar graph displays categorical data with rectangular bars, where the length of each bar represents the frequency or value of the category.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.