Statistics and Making Inferences

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots representing the frequency of data points in a dataset. Each dot represents one observation.

Front

What does it mean to make an inference in statistics?

Back

Making an inference means drawing a conclusion or making a judgment about a population based on a sample of data.

Front

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

Back

To calculate the average, add all the numbers in the dataset together and then divide by the total number of values.

Front

What is the median in a dataset?

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

What is a box plot?

Back

A box plot is a graphical representation of a dataset that shows its minimum, first quartile, median, third quartile, and maximum.

Front

What does variability in data mean?

Back

Variability refers to how spread out or dispersed the values in a dataset are. Greater variability means the values are more spread out.

Front

What is the difference between mean and median?

Back

The mean is the average of all values, while the median is the middle value. The mean can be affected by extreme values, while the median is not.

Front

How can you compare two datasets?

Back

You can compare two datasets by looking at measures such as mean, median, range, and variability.

Front

What is a sample in statistics?

Back

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

Front

What does it mean if one group has a higher median than another?

Back

If one group has a higher median, it indicates that, on average, the values in that group are greater than those in the other group.