Statistics Review

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you calculate the range of a data set?

Back

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

Front

What is the mode of a data set?

Back

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

Front

Given the data set: 7, 3, 5, 6, 5, 4, 5, what is the mode?

Back

The mode is 5, as it appears most frequently.

Front

What is a frequency table?

Back

A frequency table is a way to organize data that shows how often each value occurs in a data set.

Front

How do you find the mean of a data set?

Back

The mean is found by adding all the values in the data set and then dividing by the number of values.

Front

What does it mean if a data set is skewed?

Back

A skewed data set is one that is not symmetrical and has a tail on one side. If the tail is on the right, it is positively skewed; if on the left, it is negatively skewed.

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 difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities (e.g., colors, names), while quantitative data represents numerical values (e.g., height, weight).

Front

What is a box plot?

Back

A box plot is a standardized way of displaying the distribution of data based on a five-number summary: minimum, first quartile, median, third quartile, and maximum.