Introduction to Statistics Test

Front

What is the definition of statistics?

Back

A branch of mathematics dealing with the collection, organization, analysis, interpretation, and presentation of data.

Front

What is a population in statistics?

Back

The entire group of individuals or instances about whom we hope to learn.

Front

What is the median?

Back

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

Front

What is the mode?

Back

The value that appears most frequently in a data set.

Front

What is the mean?

Back

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

Front

What does the interquartile range (IQR) represent?

Back

The range of the middle 50% of a data set, calculated as Q3 - Q1.

Front

How do you find the median of a data set with an odd number of values?

Back

Arrange the data in order and select the middle value.

Front

How do you find the median of a data set with an even number of values?

Back

Arrange the data in order and calculate the average of the two middle values.

Front

What is an outlier?

Back

A value that is significantly higher or lower than the other values in a data set.

Front

What is the best measure of center for data with outliers?

Back

The median, as it is less affected by extreme values.