Visualizations of Data Test

Front

What is the mean in a data set?

Back

The mean is the average of all data points, calculated by summing all values and dividing by the number of values.

Front

What is the median in a data set?

Back

The median is the middle value when the data points are arranged in ascending order. If there is an even number of values, it is the average of the two middle values.

Front

What does it mean if a data set is symmetrical?

Back

A symmetrical data set has a balanced distribution where the left and right sides are mirror images, leading to the mean and median being close in value.

Front

What is a frequency in statistics?

Back

Frequency refers to how often a particular data point or range of data points appears in a data set.

Front

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

Back

A bar graph displays categorical data with rectangular bars, while a histogram represents the distribution of numerical data using adjacent bars to show frequency.

Front

What are whiskers in a box and whisker plot?

Back

Whiskers are lines that extend from the box to the smallest and largest values in the data set, but they do not always reach the minimum and maximum values.

Front

What is a frequency polygon?

Back

A frequency polygon is a graphical representation of the distribution of a data set, created by connecting the midpoints of the top of the bars of a histogram with straight lines.

Front

How can the shape of a data set be revealed?

Back

The shape of a data set can be revealed through visualizations like frequency polygons, histograms, and box plots.

Front

What is the range of a data set?

Back

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

Front

What is a box and whisker plot used for?

Back

A box and whisker plot is used to display the distribution of a data set, highlighting the median, quartiles, and potential outliers.