Domain 4: Statistics & Probability

Front

What is relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations. It is often expressed as a percentage.

Front

How do you calculate the relative frequency of a specific age group eating breakfast?

Back

To calculate the relative frequency, divide the number of students in the age group who eat breakfast by the total number of students in that age group, then multiply by 100 to get a percentage.

Front

What is standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values. A low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.

Front

How do you determine which data set has the largest standard deviation?

Back

To determine the largest standard deviation, calculate the standard deviation for each data set and compare the results. The data set with the highest value has the largest standard deviation.

Front

What is 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. It measures the spread of the middle 50% of the data.

Front

How do you calculate the interquartile range?

Back

To calculate the IQR, first find Q1 (the median of the lower half of the data) and Q3 (the median of the upper half of the data). Then, subtract Q1 from Q3: IQR = Q3 - Q1.

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 for analysis.

Front

What does it mean if a data set has a high standard deviation?

Back

A high standard deviation indicates that the data points are spread out over a wide range of values, meaning there is a lot of variability in the data.

Front

What is the purpose of using Desmos in statistics?

Back

Desmos is a graphing calculator that helps visualize data sets, perform calculations, and analyze statistical measures like mean, median, mode, and standard deviation.

Front

What is the median of a data set?

Back

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