Box & Whiskers

Front

What is a Box and Whisker Plot?

Back

A Box and Whisker Plot is a graphical representation of a data set that shows its 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 of a data set?

Back

To find the median, arrange the data in ascending order and locate the middle number. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the upper quartile (Q3)?

Back

The upper quartile (Q3) is the median of the upper half of a data set, representing the 75th percentile.

Front

What is the lower quartile (Q1)?

Back

The lower quartile (Q1) is the median of the lower half of a data set, representing the 25th percentile.

Front

What is the interquartile range (IQR)?

Back

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

Front

How do you calculate the interquartile range (IQR)?

Back

IQR = Q3 - Q1.

Front

What does the term 'outlier' mean in statistics?

Back

An outlier is a data point that is significantly different from the other values in a data set, often lying outside 1.5 times the IQR from the quartiles.

Front

What is the purpose of a Box and Whisker Plot?

Back

A Box and Whisker Plot is used to visually summarize the distribution of a data set, highlighting its central tendency and variability.

Front

How can you identify the median from a Box and Whisker Plot?

Back

The median is represented by the line inside the box of the Box and Whisker Plot.