Statistics in Foundations of Math 1

Front

What is the upper quartile value?

Back

The upper quartile (Q3) is the value that separates the highest 25% of a data set from the rest. It is the median of the upper half of the data.

Front

Which set of data probably has the points closest to the mean?

Back

The set with the smallest standard deviation has points closest to the mean. In this case, Set 3 with a standard deviation of 1.7.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set. For example, in the data set 82, 86, 88, 92, the mode is 88.

Front

How do you calculate the standard deviation?

Back

Standard deviation measures the amount of variation or dispersion in a set of values. It is calculated by taking the square root of the variance.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the upper quartile (Q3) and the lower quartile (Q1) of a data set. It measures the spread of the middle 50% of the data.

Front

What does a higher standard deviation indicate?

Back

A higher standard deviation indicates that the data points are spread out over a wider range of values, meaning there is more variability in the data.

Front

What is the median of a data set?

Back

The median is the middle value when a data set is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value from the largest value in the data set.

Front

What is a data set?

Back

A data set is a collection of related data points or values that can be analyzed to extract meaningful information.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a data set, often represented in a table or graph.