F24 Unit 6 Exam

Front

What is the range in statistics?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you calculate the range of a set of heights: 158cm, 172cm, 164cm, 164cm, 167cm, 159cm?

Back

Range = Highest value - Lowest value = 172cm - 158cm = 14cm.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

What does a standard deviation measure?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

What is a population in statistics?

Back

A population is the entire collection or group of individuals being studied.

Front

What is a sample in statistics?

Back

A sample is a subset of a population used to represent the whole.

Front

What is a parameter in statistics?

Back

A parameter is a numerical characteristic of a population, such as a mean or standard deviation.

Front

What is a statistic in statistics?

Back

A statistic is a numerical characteristic of a sample, such as a sample mean.

Front

How do you find the mean of a data set?

Back

The mean is calculated by adding all the values together and dividing by the number of values.

Front

What is the formula for calculating variance?

Back

Variance = (Σ(x - mean)²) / N, where x is each value, mean is the average, and N is the number of values.