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

How do you determine the range of a dataset?

Back

The range is calculated by subtracting the smallest value from the largest value in the dataset.

Front

What does the height of a bar in a histogram represent?

Back

The height of a bar in a histogram represents the frequency (count) of data points that fall within the corresponding bin.

Front

What is the purpose of using bins in a histogram?

Back

Bins are used to group data points into intervals, allowing for a clearer visualization of the distribution of data.

Front

How can you identify the mode from a histogram?

Back

The mode can be identified as the bin with the highest bar (frequency) in the histogram.

Front

What does a boxplot reveal about the data?

Back

A boxplot reveals the central tendency, variability, and potential outliers in the data.

Front

What is an outlier in a dataset?

Back

An outlier is a data point that significantly differs from other observations, often lying outside 1.5 times the interquartile range (IQR) from the quartiles.

Front

How do you calculate the interquartile range (IQR)?

Back

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

Front

What does the median represent in a dataset?

Back

The median represents the middle value of a dataset when it is ordered from least to greatest.