Math IA - Intro to Stats Practice (1st) 12/2

Front

What is bias in survey results?

Back

Bias refers to a systematic error that leads to an incorrect representation of the population being studied. It can occur due to the way questions are asked or the selection of participants.

Front

What is the median in a data set?

Back

The median is the middle value when a data set is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What is a population in statistics?

Back

A population is the entire group of individuals or instances about whom we hope to learn. In surveys, it refers to all the subjects that fit a certain criteria.

Front

How do you calculate the mean of a set of numbers?

Back

To calculate the mean, add all the numbers together and then divide by the total count of numbers.

Front

What is the average in statistics?

Back

The average, often referred to as the mean, is a measure of central tendency that summarizes a set of values by dividing the sum of those values by the number of values.

Front

What is a sample in statistics?

Back

A sample is a subset of a population selected for observation and analysis. It is used to make inferences about the population as a whole.

Front

What does it mean for a survey to be representative?

Back

A representative survey accurately reflects the characteristics of the population from which it is drawn, ensuring that all segments of the population are included.

Front

What is the formula for finding the mean of three numbers?

Back

Front

What is the significance of the mode in a data set?

Back

The mode is the value that appears most frequently in a data set. It is useful for understanding the most common value.

Front

How do you determine the average from a frequency table?

Back

To find the average from a frequency table, multiply each value by its frequency, sum these products, and then divide by the total number of observations.