Unit 2 Practice

Front

What does it mean when a graph has a peak?

Back

A peak in a graph indicates the mode, or the most frequently occurring value in the data set.

Front

What is a skewed right distribution?

Back

A skewed right distribution has a longer tail on the right side, indicating that most data points are concentrated on the left.

Front

What are outliers in a data set?

Back

Outliers are data points that differ significantly from other observations, often lying outside 1.5 times the interquartile range (IQR).

Front

How do you calculate the Interquartile Range (IQR)?

Back

IQR is calculated as Q3 (the third quartile) minus Q1 (the first quartile).

Front

What does a boxplot represent?

Back

A boxplot visually summarizes the distribution of a data set, showing the median, quartiles, and potential outliers.

Front

What is the median of a data set?

Back

The median is the middle value when the data points are arranged in ascending order.

Front

What is the first quartile (Q1)?

Back

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

Front

What is the third quartile (Q3)?

Back

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

Front

What does it mean if a data set has no mode?

Back

If a data set has no mode, it means that no number appears more than once.

Front

How do you identify the mode of a data set?

Back

The mode is identified as the value that appears most frequently in the data set.