Probability and Statistics

Front

What is the median of a set of numbers?

Back

The median is the middle value in a list of numbers sorted in ascending order. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you find the median of the following numbers: 99, 32, 61, 82, 58, 41, 73, 24, 18?

Back

First, sort the numbers: 18, 24, 32, 41, 58, 61, 73, 82, 99. The median is 58.

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 (impossible) and 1 (certain).

Front

What is the probability of drawing a black marble from a bag containing 3 red and 2 blue marbles?

Back

The probability is 0/5, since there are no black marbles in the bag.

Front

How do you calculate the probability of an event?

Back

Probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

In a bag with 30 pieces of candy (15 grape, 7 cherry, 3 lemon, 5 strawberry), what is the probability of drawing a lemon?

Back

The probability is 1/10, calculated as 3 (lemons) divided by 30 (total candies).

Front

What is theoretical probability?

Back

Theoretical probability is the probability of an event calculated based on the possible outcomes in a perfect scenario.

Front

If a bag contains 6 blue, 4 red, and 5 green marbles, what is the theoretical probability of not choosing a blue marble?

Back

Front

What is the mean of a data set?

Back

The mean is the average of a set of numbers, calculated by dividing the sum of all values by the number of values.

Front

If the mean of a distribution is 54, how do you find a missing frequency x?

Back

You can set up an equation based on the mean formula and solve for x.