Stats Exam

Front

What is the range of a set of data?

Back

The range is the difference between the maximum and minimum values in a data set.

Front

What does 'mean' refer to in statistics?

Back

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

Front

How do you find the median of a data set?

Back

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

Front

What is a normal distribution?

Back

A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Front

What does standard deviation measure?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

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 specified ranges.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities, while quantitative data represents numerical values that can be measured.

Front

What is a sample in statistics?

Back

A sample is a subset of a population used to represent the entire group in statistical analysis.

Front

What is the purpose of a box plot?

Back

A box plot visually summarizes the distribution of a data set by displaying its minimum, first quartile, median, third quartile, and maximum.

Front

What does it mean if data is skewed?

Back

Skewed data is not symmetrical and has a longer tail on one side, indicating that the data is not evenly distributed.