Statistics Study Type

Chosen at random, 580 customers at a car dealership are contacted and asked their opinions of the service they received.
This is what type of sample?

• convenience

• stratified

• simple random sample

• cluster

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys, so she randomly selects five students from the class to survey, paying no attention to their gender.
This is a form of:

• Cluster Sampling

• Systematic Sampling

• Stratified Sampling

• Simple Random Sampling

A poll about favorite sports is taken from 100 seniors in a high school where the senior class has 575 students. 23% of respondents said that baseball was their favorite sport.
The "100" is the ______

• Sample Size

• Population Size

• Statistic

• Parameter

A poll about favorite sports is taken from 100 seniors in a high school where the senior class has 575 students. 23% of respondents said that baseball was their favorite sport.
The "575" is the ______

• Sample Size

• Population Size

• Statistic

• Parameter

A teacher collected data from a random sample of 𝟓𝟎 students in a school district to see if there is a relationship between a student's reading score on a standardized reading exam and their shoe size.

• Survey

• Observational study

• Experimental Study

I want to find out how many people in my school like a certain brand of soda, so I watch what all of my friends drink. This is an example of a(n) _​ (a)   .

• Observational Study

• Double Blind Study

• Experiment

• Randomized Trial

Ken wants to compare how many hours a week that sixth graders spend doing mathematics homework to how many hours a week that eleventh graders spend doing mathematics homework. He randomly selects ten sixth graders and ten eleventh graders and records how many hours each student spent on mathematics homework in a certain week.

What study is described?

• Survey

• Experimental Study

• Observational Study

What is statistics?

• The science of collecting and analysing data

• Statistics collected from an entire population

• An element or feature that can vary

• A group chosen from a population

This is what type of sample?

• cluster

• convenience

• systematic

• stratified

10% of college students are predicted to travel out the country during spring break.

• Inferential

• Descriptive