Histograms

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data. It shows how many data points fall within specified ranges (intervals).

Front

What is an interval in a histogram?

Back

An interval is a range of numbers that groups data points together. For example, an interval of 10-20 includes all data points from 10 to 20.

Front

How do you determine the height of a bar in a histogram?

Back

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

Front

What does it mean if a histogram has a tall bar?

Back

A tall bar in a histogram indicates that a large number of data points fall within that interval.

Front

What does it mean if a histogram has a short bar?

Back

A short bar in a histogram indicates that few data points fall within that interval.

Front

How can you find the interval with the greatest frequency in a histogram?

Back

To find the interval with the greatest frequency, look for the tallest bar in the histogram.

Front

What is the purpose of using histograms?

Back

Histograms are used to visualize the distribution of data, making it easier to see patterns, trends, and outliers.

Front

If a histogram shows that most students scored between 70 and 80, what can you infer?

Back

You can infer that the majority of students performed within that score range, indicating a common level of understanding or ability.

Front

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

Back

A histogram displays the frequency of numerical data in intervals, while a bar graph represents categorical data.

Front

How do you read a histogram?

Back

To read a histogram, identify the intervals on the x-axis and the frequency on the y-axis, then observe the height of the bars.