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

What is the purpose of using intervals in a histogram?

Back

Intervals (or bins) are used in a histogram to group data points into ranges, allowing for a clearer visualization of the distribution of data.

Front

What does it mean if a histogram has overlapping intervals?

Back

Overlapping intervals in a histogram can lead to confusion and misinterpretation of data, as it may not accurately represent the frequency of data points.

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 significance of labeling axes in a histogram?

Back

Labeling axes in a histogram is crucial for understanding what the data represents, including the variable being measured and the frequency of occurrences.

Front

What is an interval in the context of data representation?

Back

An interval is a range of numbers that groups data points together, often used in histograms to show frequency.

Front

How can you determine the number of data points above a certain value in a dot plot?

Back

Count the number of dots that are plotted above the specified value on the number line.

Front

What does a high peak in a histogram indicate?

Back

A high peak in a histogram indicates a high frequency of data points within that interval, suggesting that many observations fall within that range.

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 shows the frequency of data points in each interval.