Concepts 11 - 12 Review

Front

What is the median of a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you calculate the mean of a data set?

Back

The mean is calculated by adding all the numbers in the data set and then dividing by the total number of values.

Front

What is the mode of a data set?

Back

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

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

How do you interpret a histogram?

Back

A histogram displays the distribution of numerical data by showing the frequency of data points within specified ranges (bins).

Front

What does it mean if a bar graph shows twice as many students for one category compared to another?

Back

It indicates that the number of students who chose that category is double the number of students who chose the other category.

Front

What is the importance of labeling axes in graphs?

Back

Labeling axes is crucial for clarity, as it helps the viewer understand what data is being represented and the scale of measurement.

Front

How do you find the total from a histogram?

Back

To find the total from a histogram, sum the heights of the bars, which represent the frequency of data points in each bin.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average, median is the middle value, and mode is the most frequently occurring value in a data set.

Front

What is a frequency distribution?

Back

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