PSSA Practice Flashcardziz

Front

What is Factoring in mathematics?

Back

Factoring is the process of breaking down an expression into a product of simpler expressions, called factors. For example, 14x + 21 can be factored into 7(2x + 3).

Front

How do you find the Mean Absolute Deviation (MAD)?

Back

To find the MAD, first calculate the mean of the data set, then find the absolute differences between each data point and the mean, and finally calculate the average of those absolute differences.

Front

If a hamburger costs $6 for 3 pounds, how much does it cost per pound?

Back

The cost per pound is $2, calculated by dividing $6 by 3 pounds.

Front

What is the Interquartile Range (IQR)?

Back

The IQR is a measure of statistical dispersion, calculated as the difference between the third quartile (Q3) and the first quartile (Q1) in a data set.

Front

What is a Dependent Variable?

Back

A dependent variable is a variable whose value depends on the value of another variable. In the context of a paycheck, the amount of money earned (m) depends on the hours worked (h).

Front

What is the Mean of a data set?

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 does it mean to solve an equation?

Back

To solve an equation means to find the value(s) of the variable(s) that make the equation true.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value in mathematical expressions or equations.

Front

How do you calculate the total cost of an item based on its price per unit?

Back

To calculate the total cost, multiply the price per unit by the number of units purchased.

Front

What is the purpose of using equivalent expressions in algebra?

Back

Equivalent expressions are used to simplify problems and make solving equations easier by showing different forms of the same value.