IQR, Sample , Survey, Mean

Front

What does IQR stand for?

Back

Interquartile Range, a measure of statistical dispersion.

Front

How do you calculate the mean of a data set?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is a sample in statistics?

Back

A subset of a population used to represent the whole.

Front

What is a survey?

Back

A method of collecting data by asking questions to a group of people.

Front

What is the mode in a data set?

Back

The number that appears most frequently.

Front

What is the median in a data set?

Back

The middle value when the numbers are arranged in order.

Front

What is an outlier?

Back

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

Front

How does an outlier affect the mean?

Back

It can cause the mean to increase or decrease.

Front

What is a biased sample?

Back

A sample that does not accurately represent the population.

Front

What is the purpose of using a random sample?

Back

To ensure that every member of the population has an equal chance of being selected.