Statistics Review

Front

What does the symbol 'σ' represent in statistics?

Back

Standard Deviation

Front

What is the mode of the following data set: 12, 10, 10, 10, 13, 12, 11, 13, 10?

Back

10

Front

If a student does not play an instrument, what is the probability that they do play a team sport if the probability is 0.2222?

Back

0.2222

Front

What is the probability of spinning green if the options are 0, 1/4, 1/2, 3/4?

Back

1/4

Front

What percentage of students wear sandals if the ratio is 20/36?

Back

20/36

Front

Define 'Mean' in statistics.

Back

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

Front

What is 'Variance' in statistics?

Back

A measure of how much values in a data set differ from the mean, calculated as the average of the squared differences from the mean.

Front

How do you calculate the 'Median' of a data set?

Back

Arrange the numbers in order and find the middle value. If there are two middle values, calculate their average.

Front

What is a 'Probability Distribution'?

Back

A function that describes the likelihood of obtaining the possible values that a random variable can take.

Front

Define 'Sample Space' in probability.

Back

The set of all possible outcomes of a random experiment.