Boxplot Review

Front

What is a boxplot?

Back

A boxplot is a graphical representation of a dataset that displays the median, quartiles, and potential outliers.

Front

What does the lower quartile (Q1) represent?

Back

The lower quartile (Q1) is the value below which 25% of the data falls.

Front

What is the upper quartile (Q3)?

Back

The upper quartile (Q3) is the value below which 75% of the data falls.

Front

How do you calculate the Interquartile Range (IQR)?

Back

IQR = Q3 - Q1, which measures the spread of the middle 50% of the data.

Front

What is the purpose of identifying outliers in a dataset?

Back

Outliers can indicate variability in the data or errors in data collection.

Front

What formula is used to find lower outliers?

Back

Lower outliers are identified using the formula: Q1 - (1.5 x IQR).

Front

What formula is used to find upper outliers?

Back

Upper outliers are identified using the formula: Q3 + (1.5 x IQR).

Front

What does the median represent in a boxplot?

Back

The median is the middle value of the dataset, dividing it into two equal halves.

Front

What does a longer box in a boxplot indicate?

Back

A longer box indicates a larger interquartile range (IQR), showing more variability in the middle 50% of the data.

Front

What does a boxplot show about the distribution of data?

Back

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