Unit 2-1, 2-2 Test Review

Front

What is the definition of Mean in statistics?

Back

The Mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Front

How do you calculate the Interquartile Range (IQR)?

Back

The Interquartile Range (IQR) is calculated by subtracting the first quartile (Q1) from the third quartile (Q3). IQR = Q3 - Q1.

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.

Front

How do you find the total number of people who chose a specific option?

Back

To find the total number of people who chose a specific option, sum the counts of all options that include that choice.

Front

What is the formula for calculating the Mean of a data set?

Back

Mean = (Sum of all data values) / (Number of data values).

Front

What does it mean if a data set has a high interquartile range?

Back

A high interquartile range indicates a wide spread of the middle 50% of the data, suggesting greater variability.

Front

How do you interpret a relative frequency of about 44%?

Back

A relative frequency of about 44% means that approximately 44 out of every 100 observations fall into that category.

Front

What is the significance of the median in a data set?

Back

The median is the middle value when the data set is ordered, and it divides the data into two equal halves.

Front

How can you determine how many people fall into a specific category based on survey data?

Back

You can determine the number of people in a specific category by analyzing the survey results and counting the responses for that category.

Front

What does it mean if 17 people watched more than 6 hours of TV?

Back

It means that in the surveyed group, 17 individuals reported watching more than 6 hours of television.