Population Random

The entire group studied is called the

• sample

• population

Select the population and the sample:

James wanted to know his peers' preferences of school lunch choice, so he surveyed every 10th person who walked into lunch period 6.

• The population is all students at James' school

• The sample is all students at James' school

• The population is every 10th student at Period 6 lunch

• The sample is every 10th student at Period 6 lunch

Ms. Falls wants to know 4th period's favorite food. She picks 10 students in 4th period to ask.

What is the population?

• All students at HMS

• All students in 4th period

• The 10 students Ms. Falls picks

• All students in 7th grade

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Quartile

Which statement best describes a random sample of all students in a middle school?

• Of all the students who are on the track team, the first three to finish a race are selected.

• Of all the students who are in the drama club, every third student on the roster is selected.

• Of all the students who complete an assignment, the first, third, and tenth students are selected.

• Of all the students who attend a school-wide assembly, those sitting in every third seat are selected.

Sample in which each individual or object in the entire population has an equal chance of being selected.

• Simple Event

• Sample

• Random Sample

• Scatter Plot

_______ is the entire group of objects or individuals considered for a survey.

• sample

• Random Sample

• population

• quartile

The data from two random samples of 200 students regarding their favorite sports are given in the table. Make inferences about the data and give the percentage of students who prefer soccer.

• 30%

• 25%

• 18%

• 32%

The data from two random samples of 200 students regarding their favorite sports are given in the table. Make inferences about the data and give the percentage of students who prefer dance.

• 34%

• 22%

• 16%

• 28%

Sandy wants to estimate the percentage of students at WMS who like Dr Pepper. She will survey a random sample of 40 students from the school’s population of 1,200 students. Which of the following would best improve the validity of her estimate?

• increase the population

• increase the sample size

• decrease the population

• decrease the sample size