Unit 12 review

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 total count of numbers.

Front

What is the median?

Back

The median is the middle value in a list of numbers sorted in ascending order. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100. It is used to compare a number to a whole.

Front

What does symmetric data mean?

Back

Symmetric data means that the data is evenly distributed around the center, with both sides of the distribution being mirror images.

Front

What is standard deviation?

Back

Standard deviation is a measure of how spread out the numbers in a data set are. A low standard deviation means the numbers are close to the mean, while a high standard deviation means they are spread out.

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the middle 50% of the data.

Front

What is a data set?

Back

A data set is a collection of related data points or values, often organized in a table or list.

Front

What is a mode?

Back

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

Front

What is a variable?

Back

A variable is a symbol or letter that represents a number in mathematical expressions or equations.

Front

What is a survey?

Back

A survey is a method of collecting data by asking people questions to gather information about their opinions, behaviors, or characteristics.