Final Practice

Front

What is the mean (average) of a set of numbers?

Back

The mean (average) is calculated by adding all the numbers in a set and dividing by the total count of numbers.

Front

How do you calculate the mean of 5, 8, 9, 6, and 2?

Back

Add the numbers: 5 + 8 + 9 + 6 + 2 = 30. Then divide by the count (5): 30 / 5 = 6.

Front

What is the solution to the equation 4x - 5 = 15?

Back

To solve for x, add 5 to both sides (4x = 20), then divide by 4: x = 5.

Front

What is the solution to the equation 10x - 50 = 200?

Back

Add 50 to both sides (10x = 250), then divide by 10: x = 25.

Front

What is the solution to the equation X - 5 = 25?

Back

Add 5 to both sides: X = 30.

Front

What is the formula for calculating the mean of a set of numbers?

Back

Mean = (Sum of all numbers) / (Total count of numbers).

Front

What is the mean (average) of 21, 8, 9, 12, and 5?

Back

Add the numbers: 21 + 8 + 9 + 12 + 5 = 55. Then divide by the count (5): 55 / 5 = 11.

Front

What does it mean to solve for x in an equation?

Back

To find the value of x that makes the equation true.

Front

What is the first step in solving the equation 4x - 5 = 15?

Back

Add 5 to both sides to isolate the term with x.

Front

What is the importance of understanding mean in statistics?

Back

The mean provides a measure of central tendency, helping to summarize a set of data.