Basic Probability
This term describes the likelihood of an event happening
What is Probability?
An event consisting of two or more simple events.
What is a compound event?
A sample that accurately reflects the population
What is a representative sample
Using data from a sample to make estimates about the larger population.
What is making inferences?
A when you look at two populations and find the differences or similarities.
What is comparing populations?
The probability of flipping a coin and it landing on heads
What is 1/2, 0.5, or 50%?
The probability of rolling a die and getting an even number.
What is 1/2 , 0.5, or 50%?
This type of sample is chosen randomly, giving each member of the population an equal chance of being selected.
What is a random sample?
This term is used when the sample does NOT accurately represent the population.
What is a Non-Representative Sample or Sampling Error
This statistical measure can help compare the center of two data sets.
What is the Mean, Median, or Mode?
The probability of rolling a 3 or a 5 on a single roll of a six-sided die.
What is 2/6 or 1/3?
The probability of flipping two coins and both landing on heads.
What is 1/4?
The term given when a group is favored when choosing a sample from a population.
What is Bias?
8 out of 10 people surveyed chose Summer as their favorite season.
Using this sample, in a population of 200, this is the number of people you could expect prefer Summer.
What is 160 people?
This statistical measure is used to compare the spread or variability of two data sets.
What is the MAD? or Standard Deviation?
This term describes an outcome that is certain not to happen.
What is an impossible event?
Probability of Rolling a number less than 5 on a number cube and getting heads when tossing a coin.
4/6 * 1/2 = 4/12 = 1/3
(multiply their individual probabilities)
This method used to get a representative sample from the population.
What is Random Sampling?
This is the number of individuals or items included in your sample.
What is the Sample Size?
The name of the graph that shows the number of each data on a number line.
What is a Dot Plot?
This diagram shows possible outcomes from multiple events like rolling a number cube and tossing two coins.
What is a Tree Diagram?
A D-20 is rolled and a Spinner with 4 equal sections labeled Purple, Pink, Orange, and Yellow. This is the probability of rolling a prime number and getting Pink on the spinner.
What is 1/10, 0.1, or 10%?
(8/20)*(1/4)
It's a sampling method where the population is divided into clusters that are randomly selected to be included in the study.
What is Cluster Sampling?
This term refers to the extent to which sample statistics differ from the corresponding population parameters due to chance.
What is sampling error?
This is what we call it when we look at the average scores of two different classes on a science test to see which class did better.
What is comparing means?