Section 9 Review - One Variable Statistics

Front

What is the first quartile (Q1) in a data set?

Back

The first quartile (Q1) is the value that separates the lowest 25% of the data from the rest.

Front

Which measure of central tendency is best for understanding the spread of data?

Back

Standard Deviation is the best measure for understanding the spread of data.

Front

What is an interval in statistics?

Back

An interval is a range of numbers.

Front

How do you calculate the mean of a data set?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is the median of a data set?

Back

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

Front

What is the mode in a data set?

Back

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

Front

What does a higher standard deviation indicate about a data set?

Back

A higher standard deviation indicates that the data points are spread out over a wider range of values.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value from the largest value in the data set.

Front

What is the purpose of a box plot?

Back

A box plot visually represents the distribution of a data set, showing the median, quartiles, and potential outliers.

Front

What is an outlier in a data set?

Back

An outlier is a data point that is significantly different from the other data points.