Statistics Review

Front

What is a statistical question?

Back

A statistical question is one that anticipates variability in the data and can be answered by collecting data that varies.

Front

What is the median in a data set?

Back

The median is the middle value in a list of numbers sorted in ascending or descending order. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you find the minimum value in a data set?

Back

The minimum value is the smallest number in a data set.

Front

What does it mean to analyze a frequency distribution?

Back

Analyzing a frequency distribution involves examining how often each value occurs in a data set, which helps identify patterns and trends.

Front

What is the significance of the interval in a frequency distribution?

Back

Intervals in a frequency distribution group data into ranges, allowing for easier analysis of how data points are distributed across different categories.

Front

How do you determine the mode of a data set?

Back

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

Front

What is the range of a data set?

Back

The range is the difference between the maximum and minimum values in a data set.

Front

How can you identify outliers in a data set?

Back

Outliers are values that lie significantly outside the range of the other data points, often identified using statistical methods such as the interquartile range.

Front

What is a bar graph used for?

Back

A bar graph is used to represent categorical data with rectangular bars, where the length of each bar is proportional to the value it represents.

Front

What is the purpose of a histogram?

Back

A histogram is used to represent the distribution of numerical data by showing the frequency of data points within specified ranges (bins).