Histograms and Graphs

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data. Each bar represents a range of values (intervals) and the height of the bar shows how many data points fall within that range.

Front

What is the purpose of a histogram?

Back

The purpose of a histogram is to visually summarize the distribution of a dataset, showing how often each range of values occurs.

Front

What is an interval in the context of a histogram?

Back

An interval is a range of numbers that groups data points together in a histogram. For example, an interval might be 0-10, 11-20, etc.

Front

How do you determine the total number of responses from a histogram?

Back

To determine the total number of responses, add the heights of all the bars in the histogram.

Front

What information can you NOT get from a histogram?

Back

You cannot determine exact values or specific data points from a histogram; it only shows frequency within intervals.

Front

What is a stem-and-leaf plot?

Back

A stem-and-leaf plot is a method of displaying quantitative data in a graphical format, similar to a histogram, but it retains the original data values.

Front

How do you find the smallest value in a stem-and-leaf plot?

Back

The smallest value is found by looking at the first stem and the smallest leaf associated with it.

Front

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

Back

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

Front

What is the difference between a histogram and a bar graph?

Back

A histogram displays numerical data and groups it into intervals, while a bar graph displays categorical data with separate bars for each category.

Front

What does it mean if a histogram is skewed to the right?

Back

If a histogram is skewed to the right, it means that the majority of the data points are concentrated on the left side, with fewer high values stretching out to the right.