Dot Plots & Box Plots

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots representing the frequency of data points. Each dot represents one occurrence of a value.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data in numerical order and identify the middle value. If there is an even number of values, the median is the average of the two middle values.

Front

What is a box plot?

Back

A box plot, or box-and-whisker plot, is a graphical representation of a data set that shows the median, quartiles, and potential outliers.

Front

What does the range of a data set represent?

Back

The range is the difference between the highest and lowest values in a data set, indicating the spread of the data.

Front

How do you calculate the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting the first quartile (Q1) from the third quartile (Q3). IQR = Q3 - Q1.

Front

What is the first quartile (Q1)?

Back

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

Front

What is the third quartile (Q3)?

Back

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

Front

How do you identify outliers in a box plot?

Back

Outliers are typically identified as values that fall below Q1 - 1.5*IQR or above Q3 + 1.5*IQR.

Front

What is the purpose of a dot plot?

Back

Dot plots are used to visualize the distribution of small data sets and to identify patterns, clusters, or gaps in the data.

Front

How can you determine the mode of a data set?

Back

The mode is the value that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.