Histograms/Boxplots practice

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 boxplot?

Back

A boxplot (or box-and-whisker plot) is a standardized way of displaying the distribution of data based on a five-number summary: minimum, first quartile (Q1), median, third quartile (Q3), 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

How do you find the median in a data set with an even number of values?

Back

To find the median in a data set with an even number of values, calculate the average of the two middle numbers.

Front

What is the purpose of using intervals in a histogram?

Back

Intervals (or bins) in a histogram group data points into ranges, allowing for a visual representation of the frequency distribution of the data.

Front

How do 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.

Front

What does the term 'frequency' mean in the context of histograms?

Back

Frequency refers to the number of data points that fall within a specific interval or bin in a histogram.

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.

Front

How can you identify outliers in a boxplot?

Back

Outliers in a boxplot are typically represented as individual points that fall outside the whiskers, which extend to 1.5 times the interquartile range (IQR) from the quartiles.

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is the difference between the first quartile (Q1) and the third quartile (Q3) and measures the spread of the middle 50% of the data.