Dot Plots, Histograms, and Box Plots

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, using bars to show the frequency of data points within specified intervals.

Front

What is a box plot (box and whisker plot)?

Back

A box plot is a standardized way of displaying the distribution of data based on a five-number summary: 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.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the minimum value from the maximum value in the data set.

Front

What is the purpose of quartiles in a box plot?

Back

Quartiles divide the data into four equal parts, helping to understand the spread and center of the data.

Front

What does the upper quartile (Q3) represent?

Back

The upper quartile (Q3) is the median of the upper half of the data set, representing the 75th percentile.

Front

What does the lower quartile (Q1) represent?

Back

The lower quartile (Q1) is the median of the lower half of the data set, representing the 25th percentile.

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is the difference between the upper quartile (Q3) and the lower quartile (Q1), indicating the range of the middle 50% of the data.

Front

How do you interpret a histogram?

Back

In a histogram, the height of each bar indicates the frequency of data points within each interval, allowing for visual analysis of data distribution.