DEFINITIONS
_______ is when everyone has a chance of participating in the survey.
what is RANDOM?
A survey shows 21% of people watch tv during their spare time. We conclude people spend about 1/5 of their spare time watching tv. This conclusion is known as this type of statistic.
What is Inferential Statistics
We get data on 50 random seniors and find the average GPA of them is 2.789. This is the type of statistics we have
What is Descriptive
The type of sample when you ask people questions?
what is a survey
The list of all possible outcomes for an event
What is SAMPLE SPACE
what is DISCRETE?
You pick 50 random people from each high school in the district to survey to find their opinion on school safety. This is the type of sample you have.
What is Stratefied
This is the type of data we get such as the color of cars
What is CATEGORICAL/QUALITATIVE
The type of sample when you get information on all of the participants?
what is a CENSUS
These are the 3 acceptable ways to write a probability.
(you must give all 3)
What are FRACTION, DECIMAL, PERCENT
What you do when the it's too dangerous to collect the data?
What is a SIMULATION?
Poorly wording a survey question can lead to this type of error. This is known as _______
What is bias
An experiment where not even the researcher knows who is in each group.
What is DOUBLE BLIND?
The TWO samples that involve dividing the population into groups.
What are cluster and stratefied?
This type of probability is based only on the math-the numbers, the facts.
What is THEORETICAL?
What is the type of statistics you get from the sample of the population you survey?
What is DESCRIPTIVE STATISTICS?
32.55% of all seniors have a GPA of 3.5 or higher. 32.55% is a _______________
What is a PARAMETER
This is the name of the phenomenon where people actually improve or get worse because they think they are getting a medicine when they actually are not.
What is the PLACEBO EFFECT
When the no one knows which group of the experiment they are in, but the researcher knows.
What is BLIND
What are experimental and theoretical
The name of the group that gets the placebo in an experiment.
What is CONTROL GROUP?
The weight of a baby would best be described as this type of variable. (two words)
What is Quantitative Continuous?
A survey where we ask every 10th person.
What is SYSTEMATIC?
This is the method we call it when we put people into groups so that no bias (intentional or unintentional) can occur.
If you draw a tree diagram, it shows their are this many possibilities when you have 3 children. (hint: draw the tree diagram)
What is 8?