Statistical Inference

Front

What is the definition of 'sample size'?

Back

The sample size is the number of observations or data points collected in a survey or study.

Front

What is a 'population' in statistics?

Back

The population is the entire group of objects or individuals considered for a survey.

Front

What does a dot plot represent in statistics?

Back

A dot plot is a graphical display of data using dots to represent the frequency of values.

Front

What is the mean in a data set?

Back

The mean is the average of a set of numbers, calculated by dividing the sum of all values by the number of values.

Front

What is an inference in statistics?

Back

An inference is a conclusion drawn from data analysis, often about a population based on a sample.

Front

What is the difference between a sample and a population?

Back

A sample is a subset of a population used to represent the whole, while a population includes all members of a specified group.

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected.

Front

What is the purpose of statistical inference?

Back

The purpose of statistical inference is to make conclusions about a population based on sample data.

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, sum all the values in the data set and divide by the number of values.

Front

What does it mean if a sample is biased?

Back

A biased sample is one that does not accurately represent the population, leading to skewed results.