Math 4 Unit 5 Review Fall 21

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is a measure of statistical dispersion, representing the range between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

What does it mean if the mean is higher than the median in a data set?

Back

If the mean is higher than the median, it indicates that the data set is positively skewed, meaning there are some high values that are pulling the mean up.

Front

Define 'survey' in statistics.

Back

A survey is a method of collecting statistical data from a small group of a population to infer insights about the larger population.

Front

What is convenience sampling?

Back

Convenience sampling is a non-probability sampling technique where subjects are selected based on their easy availability and proximity to the researcher.

Front

What is the mode in a data set?

Back

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

Front

What is bias in statistics?

Back

Bias refers to systematic errors that can lead to incorrect conclusions in statistical analysis.

Front

Identify a source of bias in survey sampling.

Back

Sampling method can introduce bias if the sample is not representative of the population.

Front

What is the difference between a population and a sample?

Back

A population includes all members of a specified group, while a sample is a subset of the population used for analysis.

Front

What does it mean if a score is described as the highest score in a test?

Back

The highest score is the maximum value achieved by any participant in the test.

Front

What is a variable in statistics?

Back

A variable is any characteristic, number, or quantity that can be measured or counted.