PA 2-4 Exit ticket

Front

What is the product of two negative numbers?

Back

The product of two negative numbers is positive.

Front

If a > 0 and b < 0, what is the sign of -5 * (a/b)?

Back

The sign is positive.

Front

Calculate the mean of the following numbers: 28, 18, 19, 18, 17.

Back

The mean is 20.

Front

What is the mean number of pages Mia wrote per day if she wrote 9, 8, 12, 11, 20 pages?

Back

The mean is 12.

Front

If a < 0 and b < 0, what is the sign of -5 * (a/b)?

Back

The sign is negative.

Front

Define 'mean' in statistics.

Back

The mean is the average of a set of numbers, calculated by dividing the sum of the numbers by the count of the numbers.

Front

What is the formula to calculate the mean?

Back

Mean = (Sum of all values) / (Number of values).

Front

What happens to the sign of a product if one factor is negative?

Back

The product becomes negative.

Front

What happens to the sign of a product if both factors are negative?

Back

The product becomes positive.

Front

If a number is multiplied by zero, what is the result?

Back

The result is zero.