Understanding Mean and Data Distributions

Front

What is the mean in a data set?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data, showing how many data points fall within certain ranges.

Front

How do you calculate the range of a data set?

Back

The range is calculated by subtracting the smallest value in the data set from the largest value.

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 box plot?

Back

A box plot is a graphical representation of a data set that shows the median, quartiles, and potential outliers.

Front

What is the median in a data set?

Back

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

Front

What does it mean for data to be normally distributed?

Back

Data is normally distributed when it forms a bell-shaped curve, with most values clustering around the mean and fewer values at the extremes.

Front

How do you find the mean of a data set?

Back

To find the mean, add all the numbers in the data set together and divide by the total number of values.

Front

What is a dot plot?

Back

A dot plot is a simple way to display data using dots to represent individual data points, often used for small data sets.

Front

What is a bar graph?

Back

A bar graph is a chart that presents categorical data with rectangular bars, where the length of each bar is proportional to the value it represents.