Statistics and Probability Review

Front

What is the theoretical probability of pulling a red marble from a bag containing 3 red, 2 blue, 1 yellow, and 4 green marbles?

Back

The theoretical probability is \( \frac{3}{10} \).

Front

What is the median wait time?

Back

The median wait time is the middle value when all wait times are arranged in order. For example, if Lucy's Steakhouse has a median wait time of 20 minutes and Gary's Grill has 30 minutes, then Lucy's has a higher median wait time.

Front

What is the range in a set of numbers?

Back

The range is defined as the biggest number minus the smallest number.

Front

On a 6-sided die, which outcomes are equally likely?

Back

Rolling an odd number, rolling an even number, and rolling a prime number are all equally likely.

Front

What is the median of the following set of scores: 1, 2, 5, 6, 8, 8, 9, 12, 15?

Back

The median is 8.

Front

Define probability.

Back

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

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.

Front

What is the difference between mean and median?

Back

The mean is the average of a set of numbers, while the median is the middle value when the numbers are arranged in order.

Front

What does it mean if two events are independent?

Back

Two events are independent if the occurrence of one does not affect the probability of the other.

Front

What is a mode in a data set?

Back

The mode is the number that appears most frequently in a data set.