Enter Title

Vocabulary

100

A numeric summary of a sample

Statistic

200

The dependent variable of interest

Response

300

The explanatory variable of interest

Factor

400

A combination of the levels of the factors

Treatment 

500

Describe to me the difference between an observational and experimental unit

Observational unit: smallest unit that gives a response

Experimental unit: smallest group in which treatments are applied to

Miscellaneous/What is this an example of?

100

"This vitamin made my hair grow 6 inches in 3 months!"

Anecdote

200

A researcher is doing a study on whether music during studying improves test scores. They get 30 students and randomly assign 15 to the music group and 15 to the non-music group. 

Designed experiment 

300

In an experiment, I am going to give different pain medications to different groups. Pain med type would be a ___________. Asprin, Tylenol, and Ibuprofen would be __________. 

Factor; levels of the factor

400

I get a list of every GV student's G-number. I take every 20th person and ask them their GPA to find an average GPA. 

What is this sampling method? 

1 in K sampling

500

Describe to me the pros and cons of observational studies and designed experiments. 

(Hint: what is lacking in the results of one)

Observational studies: cheaper and easier to do, cannot show causation

Designed experiment: expensive, can run into ethical issues, CAN show causation 

Notation

100

n

Sample size

200

P (big P)

Population Proportion

300

x-bar

sample mean/average

400

p-hat

sample proportion

500

mu

population mean/average

PPSS

100

Sample is to statistic as population is to ___________. 

Parameter

200

I am interested in the average RBIs for first basemen in the 2023 season for MLB. I take a sample of 50 MLB first basemen and find the sample mean to be 82. 

What is the sample?

50 MLB first basemen in 2023

300

I am interested in the average RBIs for first basemen in the 2023 season for MLB. I take a sample of 50 MLB first basemen and find the sample mean to be 82. 

What is the statistic?

82 RBIs 

400

I am interested in the average RBIs for first basemen in the 2023 season for MLB. I take a sample of 50 MLB first basemen and find the sample mean to be 82. 

What is the population?

All MLB first basemen in 2023 

500

I am interested in the average RBIs for first basemen in the 2023 season for MLB. I take a sample of 50 MLB first basemen and find the sample mean to be 82. 

What is the parameter?

The mean RBI's for all MLB first basemen in 2023.