Probability and Statistics

Front

What is the median in a data set?

Back

The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you find the interquartile range (IQR)?

Back

The interquartile range (IQR) is found by subtracting the first quartile (Q1) from the third quartile (Q3). It measures the spread of the middle 50% of the data.

Front

What is the probability of an event?

Back

Probability is a measure of how likely an event is to occur, calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers together and then divide by the number of items in the set.

Front

What does a tree diagram represent in probability?

Back

A tree diagram visually represents all possible outcomes of a series of events, showing the paths from one event to the next.

Front

What is a data set?

Back

A data set is a collection of related data points or values, often organized in a table or list.

Front

What is the mode of a data set?

Back

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

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a data set into four equal parts, with Q1 being the first quartile, Q2 the median, and Q3 the third quartile.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

What is a sample in statistics?

Back

A sample is a subset of a population used to represent the entire group in statistical analysis.