Fall Madness and % Change Flashcard Practice

Front

What is percent change?

Back

Percent change is a measure of how much a quantity has increased or decreased relative to its original value, expressed as a percentage.

Front

How do you calculate percent increase?

Back

Percent increase = ((New Value - Original Value) / Original Value) * 100.

Front

How do you calculate percent decrease?

Back

Percent decrease = ((Original Value - New Value) / Original Value) * 100.

Front

What is the formula for calculating the probability of independent events?

Back

For independent events, the probability of both events occurring is the product of their individual probabilities.

Front

If the probability of an event is 0.75, what is the probability of it not occurring?

Back

The probability of it not occurring is 1 - 0.75 = 0.25.

Front

What is the probability of winning two games in a row if the probability of winning one game is 0.7?

Back

Probability of winning two games = 0.7 * 0.7 = 0.49.

Front

How do you find the percent of change from 10 to 30?

Back

Percent change = ((30 - 10) / 10) * 100 = 200% increase.

Front

What is the percent change when going from 30 to 24?

Back

Percent change = ((24 - 30) / 30) * 100 = 20% decrease.

Front

If 72 people received speeding tickets one week and 144 the next, what is the percent change?

Back

Percent change = ((144 - 72) / 72) * 100 = 100% increase.

Front

What is the probability of winning exactly one game out of two if the probability of winning is 0.7?

Back

Probability = 2 * (0.7 * 0.3) = 0.42.