7th Grade Math Review

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

What is the probability of an event?

Back

Probability is a measure of the likelihood that an event will occur, calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

What is the median in a data set?

Back

The median is the middle value in a data set when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you calculate the cost per item?

Back

To find the cost per item, divide the total cost by the number of items. For example, if 12 donuts cost $9.96, then each donut costs $9.96 ÷ 12 = $0.83.

Front

What is a proportion?

Back

Front

How do you find the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set. It is calculated as: Range = Highest value - Lowest value.

Front

What is a box plot?

Back

A box plot is a graphical representation of a data set that shows the median, quartiles, and potential outliers. It provides a visual summary of the distribution.

Front

What is the formula for calculating the mean?

Back

The formula for calculating the mean is: Mean = (Sum of all values) / (Number of values).

Front

What does it mean if a probability is 0?

Back

A probability of 0 means that the event cannot occur; it is impossible.

Front

What does it mean if a probability is 1?

Back

A probability of 1 means that the event is certain to occur.