Visualizations of Data Test

Front

What is a box-and-whisker plot?

Back

A box-and-whisker plot is a graphical representation of a data set that displays the minimum, first quartile, median, third quartile, and maximum values.

Front

What do the 'whiskers' in a box-and-whisker plot represent?

Back

The 'whiskers' extend from the box to the minimum and maximum values of the data set, but they do not always reach these values if there are outliers.

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is the range of the middle 50% of a data set, calculated as the difference between the third quartile (Q3) and the first quartile (Q1).

Front

How can the shape of a data set be determined?

Back

The shape of a data set can be determined using histograms, frequency polygons, and box-and-whisker plots.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges (bins).

Front

What is a frequency polygon?

Back

A frequency polygon is a graph that displays the frequencies of data points using line segments connecting the midpoints of the top of the bars of a histogram.

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, dividing the data into two equal halves.

Front

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

Back

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

Front

What is the purpose of using pie charts?

Back

Pie charts are used to represent the proportions of a whole, showing how different categories contribute to the total.

Front

What does frequency mean in the context of data?

Back

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