Show:
Vocab
Key points
concepts
selection and randomization
variables
100
What is an Anecdote
What is a story
100
A correlation can be drawn from an ________
What is observational study
100
Which of the following is a categorical variable? area, color, or temperature
What is color
100

A researcher has a population of lab mice, with 10 mice living in each cage. The researcher wants to check the typical weight of his mice, so he randomly chooses 3 cages, and weighs every mouse in them. This is what type of sampling?

What is cluster

100
What is a sample
What is a small selection of people from the population
200
What is data?
What is a collected observation or Numbers in context
200
Cause and effect can be determined by _____
What is a controlled experiment
200
Which of the following is a numerical variable? Volume, name, species
What is volume
200
An observational study there are two groups a control and a treatment. Do the subjects choose which group they are in or do the researchers?
What is subjects choose
200
What is the population?
What is The thing that is being studied as a whole
300
What is a placebo
What is a method of creating a control in an experiment. giving someone a pill without the medicine.
300
This is mostly useless in statistics
What is anecdotes
300
What is 50% in decimal?
What is .5
300

An experiment has two groups, a treatment group and a control group. Who gets to decide which participant is in which group?

The experimenters randomly place participants into treatment groups

300
There are 60 men and 20 women in an engineering lecture. What is the percentage of women in the engineering class?
25% of the class is women
400
What is a variable
What is a recorded characteristic
400
A confounding variable does what?
What is changes with the data in unexpected ways
400
Why are percents better then counts
What is because counts do not give context to the rest of the data.
400

An experiment is conducted. The treatment group is made up of all the men in the study and the control is all the women. The experiment shows that the treatment makes you very strong. What is happening here?

What is a confounding variable. Gender is associated with strength

400
A hospital has 300 doctors. Doctors make up 20% of the staff. What is the TOTAL number of staff in the hospital.
What is 1500 staff
500
What is causality?
What is cause and effect
500

There are two groups in any experiment: a ______ group and a _____ group

What is control, Treatment

500
A study is conducted on people who drink soda. A table is set up. Half is covered in Soda A the other half is covered in soda B. A tally is kept on how many people choose Soda A over Soda B. Is this an observational Study or a Controlled Experiment
What is Observational Study.
500

An experiment is conducted. The treatment group is made up of all the men in the study and the control is all the women. The experiment shows that the treatment makes you very strong. What should the researchers have done differently?

What is blocking. Researchers should have made sure both men and women would be in both the treatment and control groups.

500

Classify each variable as categorical or numerical: Height, weight, age, zip code, hair color

What is: numerical (cont), numerical (cont), numerical (discrete), categorical, categorical