Dot plots and histograms

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots representing the frequency of data points along a number line.

Front

How do you create a histogram?

Back

To create a histogram, divide the data into intervals (bins) and count the number of data points that fall into each interval, then represent these counts with bars.

Front

What is the median in 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 find 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 highest and lowest values 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.

Front

What is the purpose of using a histogram?

Back

A histogram is used to visualize the distribution of numerical data and to identify patterns such as skewness or modality.

Front

How do you interpret the height of bars in a histogram?

Back

The height of each bar in a histogram represents the frequency (count) of data points within that interval.

Front

What is an interval in the context of histograms?

Back

An interval (or bin) is a range of values that groups data points together in a histogram.

Front

What is the difference between a dot plot and a histogram?

Back

A dot plot displays individual data points as dots, while a histogram groups data into intervals and displays the frequency of data points in each interval.