Dot Plots and Histograms

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots plotted on a number line, where each dot represents a data point.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, where the data is divided into intervals (bins) and the frequency of data points in each interval is represented by the height of the bars.

Front

How do you determine the mode from a dot plot?

Back

The mode is the value that appears most frequently in the dot plot, represented by the column with the most dots.

Front

What is the purpose of using a histogram?

Back

The purpose of using a histogram is to visualize the distribution of data, allowing for easy identification of patterns, trends, and outliers.

Front

How do you read the intervals in a histogram?

Back

Intervals in a histogram are the ranges of values that data points fall into, and each interval is represented by a bar whose height indicates the frequency of data points within that range.

Front

What does the height of a bar in a histogram represent?

Back

The height of a bar in a histogram represents the frequency of data points that fall within the corresponding interval.

Front

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

Back

A dot plot displays individual data points as dots along a number line, while a histogram groups data into intervals and displays the frequency of data points in those intervals as bars.

Front

How can you find the median from a dot plot?

Back

To find the median from a dot plot, you must first order the data points and then locate the middle value. If there is an even number of data points, the median is the average of the two middle values.

Front

What is an outlier in a data set?

Back

An outlier is a data point that is significantly different from the other data points in the set, often lying outside the overall pattern of distribution.

Front

How can you identify the range of a data set using a histogram?

Back

The range of a data set can be identified by subtracting the smallest value from the largest value represented in the histogram.