Statistical Questions, Mean, and Median

Front

What is a statistical question?

Back

A statistical question is one that anticipates variability in the data and can be answered by collecting data that varies.

Front

What is a non-statistical question?

Back

A non-statistical question is one that can be answered with a single value or does not involve variability.

Front

What is the mean?

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

How do you calculate the mean of 5, 10, and 15?

Back

(5 + 10 + 15) / 3 = 10.

Front

What is the median?

Back

The median is the middle value in a list of numbers sorted in ascending order.

Front

How do you find the median of 3, 1, 2?

Back

First, sort the numbers: 1, 2, 3. The median is 2.

Front

What must you do before finding the median?

Back

You must sort the data from least to greatest.

Front

What is the median of the following numbers: 3, 5, 7, 9, 11?

Back

The median is 7.

Front

What is the average height of three basketball players with heights 210 cm, 220 cm, and 191 cm?

Back

The average height is 207 cm.

Front

Is 'How tall are the students in our class?' a statistical question?

Back

Yes, it is a statistical question because it anticipates variability in students' heights.