Statistics Review

Front

What is the definition of statistics?

Back

Statistics is the study of collecting, analyzing, interpreting, presenting, and organizing data.

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 certain ranges.

Front

What is the mean in statistics?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

What is the median?

Back

The median is the middle value in a data set when the numbers are arranged in order.

Front

What is the mode?

Back

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

Front

What is an outlier?

Back

An outlier is a data point that is significantly different from other observations in a data set.

Front

What is the five-number summary?

Back

The five-number summary includes the minimum, first quartile (Q1), median (Q2), third quartile (Q3), and maximum of a data set.

Front

How do you find the median of an even set of numbers?

Back

To find the median of an even set, arrange the numbers in order and take the average of the two middle numbers.

Front

What does it mean if the mean is higher than the median?

Back

If the mean is higher than the median, it suggests that there are outliers or a skewed distribution in the data set.

Front

What is the purpose of using the median instead of the mean?

Back

The median is used instead of the mean when there are outliers, as it provides a better measure of center for skewed data.