Statistics Review Flashcard B-Day 6th

Front

What is the mode in a data set?

Back

The mode is the value that appears most frequently in a data set. If no number repeats, the data set has no mode.

Front

How do you calculate the average (mean) of a set of numbers?

Back

To calculate the average, sum all the numbers in the set and then divide by the total count of numbers.

Front

What is a sample in statistics?

Back

A sample is a subset of the population that is actually studied to make inferences about the entire population.

Front

What is the purpose of sampling techniques in statistics?

Back

To select a subset of individuals or observations from a larger population for making inferences or drawing conclusions about the entire population.

Front

What is the difference between a population and a sample?

Back

A population includes all members of a specified group, while a sample is a smaller group selected from the population.

Front

What is a parameter in statistics?

Back

A parameter is a numerical characteristic or measure obtained by using all the data values from a specific population.

Front

What is a statistic in statistics?

Back

A statistic is a numerical characteristic or measure obtained by using the data values from a sample.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data in ascending order and identify the middle value. If there is an even number of observations, average the two middle values.

Front

What does it mean if a data set has no mode?

Back

It means that no number appears more than once in the data set.

Front

What is the range of a data set?

Back

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