Histograms & Box Plots

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 certain ranges (bins).

Front

What is a box plot?

Back

A box plot, or box-and-whisker plot, is a graphical representation that displays the distribution of a dataset based on five summary statistics: minimum, first quartile, median, third quartile, and maximum.

Front

What does the median represent in a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest. It divides the data into two equal halves.

Front

What is a statistical question?

Back

A statistical question is one that anticipates variability in the data and can be answered by collecting data. For example, 'How many hours do students study each week?'

Front

What is a non-statistical question?

Back

A non-statistical question is one that does not involve variability and can be answered with a single value or fact. For example, 'What is your favorite color?'

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. If no number repeats, the data set has no mode.

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. It shows the spread of the data.

Front

What are quartiles?

Back

Quartiles are values that divide a data set into four equal parts. The first quartile (Q1) is the median of the lower half, the second quartile (Q2) is the median, and the third quartile (Q3) is the median of the upper half.

Front

How do you create a histogram?

Back

To create a histogram, divide the data into intervals (bins), count how many data points fall into each bin, and then draw bars for each bin with heights corresponding to the counts.

Front

What does the whisker in a box plot represent?

Back

The whiskers in a box plot extend from the box to the smallest and largest values that are not outliers, showing the range of the data.