Understanding Samples and Populations

What is the primary focus when evaluating statements based on a data set?

• The average of the data

• The total number of data points

• The median of the data

• The mode of the data

In the Eastside Middle School survey, which elective had the highest participation?

• Spanish

• Art

• Theater Arts

• Music

Which statement is supported by the data from the Eastside Middle School survey?

• More students chose Art than Spanish.

• The number of students choosing Spanish and Art combined is greater than those choosing Theater Arts.

• Less than half of the students chose Spanish.

• All students chose Theater Arts.

How do you determine if less than half of the students chose a particular elective?

• By comparing the number of students to the total divided by three

• By comparing the number of students to the total divided by two

• By comparing the number of students to the total multiplied by two

• By comparing the number of students to the total multiplied by three

If there are 200 students in total, how many are expected to choose Spanish based on the sample data?

• 80

• 70

• 60

• 50

What is the first step in making a prediction using sample data?

• Ignoring the sample size

• Using the total number of students directly

• Starting with the information from the sample

• Guessing the number of students

Which method involves simplifying the ratio of Spanish to total students?

• Cross-multiplication

• Ratio simplification

• Subtraction method

• Direct multiplication

How can you simplify the ratio of 14 to 40?

• Divide both by 2

• Multiply both by 3

• Divide both by 3

• Multiply both by 2

What is the result of cross-multiplying 200 and 14 in the context of the prediction problem?

• 2800

• 1400

• 4000

• 5600

What is the final step in solving the prediction problem using cross-multiplication?

• Dividing the product by 40

• Subtracting the numbers

• Multiplying the product by 40

• Adding the numbers