Population & Sample

Front

What is a population in statistics?

Back

A population is the entire group of individuals or items that we want to study or draw conclusions about.

Front

What is a sample in statistics?

Back

A sample is a subset of the population that is selected for analysis to make inferences about the 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 includes only a portion of that group.

Front

What is a dot plot?

Back

A dot plot is a simple visual representation of data where each data point is represented by a dot.

Front

How do you find the mean of a data set?

Back

To find the mean, add all the values together and divide by the number of values.

Front

What is the median of a data set?

Back

The median is the middle value when the data points are arranged in ascending order.

Front

How do you determine the mode of a data set?

Back

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

Front

What does it mean if a class has a higher mean?

Back

It means that, on average, the students in that class performed better than those in a class with a lower mean.

Front

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

Back

The median provides a measure of central tendency that is less affected by outliers than the mean.

Front

How can dot plots help in comparing two groups?

Back

Dot plots allow for visual comparison of the distribution and central tendency of two groups.