Vocabulary
Additive Inverses
Two numbers that have a sum
A valid inference is one that is true about the _______ based on a _______.
sample and representative sample
A possible result of an experiment.
Outcome
an enlarged or reduced drawing that is proportional to the original object.
Scale drawing
Simulation
Outcome
An outcome is a possible result of anaction.
Lucy collects data from a random sample of seventh-graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 seventh-graders attending Lucy’s school, how many would be expected to attend afterschool programs?
35 seventh-graders
One (or more) outcomes of an experiment.
Event
A view into the inside of something made by cutting through it.
the sample space for an action is he set of all possible outcomes of that action.
Sample of a population
Population
A population is the complete set of items being studied.
Describe the sample and the population.
Honey Bee Florist Customer Survey: Favorite Flowers
Rose Daisy Tulip
15 9 16
Sample: 40 customers of Honey Bee Florist
Population: All Honey Bee Florist customers.
All the possible outcomes of an experiment.
Sample Space
The distance around the edge of a circle (or any curvy shape).
the original amount of money deposited or borrowed is an account.
Principal
Interest Rate
Interest is calculated based on a percent of the principal. That percent is called the interest rate.
There are 400 students at Polly's school. She surveyed a random sample of 80 students to find their favorite hobby. Which is the least favortie.
Read= 19
Friends= 30
Crafts= 8
Sports= 23
Doing crafts is the least popular hobby at Polly's school.
The chance that something happens. How likely it is that some event will occur.
Probability
A whole number that can be made by multiplying other whole numbers.
Composite Number
In a random sample, each member in the population has an equal chance of being selected.
Random Sample
Proportion
A proportion is an equation stating that two ratios are equal.
the process of drawing conclusions about a parameter one is seeking to measure or estimate.
inference
Luke rolls a 10-sided solid with equal-sized faces labeled 1 to 10. What is the probability of rolling a 4?
1 out of 10. Itis unlikely to occur.
wo angles are Supplementary when they add up to 180 degrees (a Straight Angle).
They don't have to be next to each other, just so long as the total is 180 degrees.
Supplementary Angles
a judgment made by interpreting data.
Inferecne