7th Grade Probability and Statistics Review

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is a sample in statistics?

Back

A sample is a part of a group being surveyed, used to represent the whole population.

Front

How do you calculate the median of a set of numbers?

Back

To find the median, arrange the numbers in order and identify the middle value. If there is an even number of values, average the two middle numbers.

Front

What is the formula for finding the total number of combinations in a probability scenario?

Back

Total combinations = (Number of choices for option 1) x (Number of choices for option 2)...

Front

What is a population in statistics?

Back

A population is the entire group that you want to draw conclusions about.

Front

What does it mean for an event to be independent in probability?

Back

Two events are independent if the occurrence of one does not affect the occurrence of the other.

Front

How do you find the mean of a set of numbers?

Back

To find the mean, add all the numbers together and divide by the total count of numbers.

Front

What is a random sample?

Back

A random sample is a subset of a population where each member has an equal chance of being selected.

Front

What is the probability of rolling an even number on a standard die?

Back

The probability is 3/6 or 1/2, since there are three even numbers (2, 4, 6) out of six possible outcomes.

Front

What is a quartile in statistics?

Back

A quartile is a type of quantile that divides a data set into four equal parts.