What does it mean to take the mean of the mean? An easy-to-use interactive has users adjust the mean ages of different samples. Finding the average of these sample means gives an estimate of the population mean.

Can DNA fingerprinting prevent the extinction of elephants? Young scientists learn about DNA fingerprinting before applying their knowledge to case studies of elephant poaching. The first case requires them to match the DNA from a tusk...

In this online interactive English vocabulary skills worksheet, students answer 10 matching questions which require them to fill in the blanks in 10 sentences. Students may submit their answers to be scored.

In this online interactive English vocabulary skills worksheet, students answer 10 matching questions which require them to fill in the blanks in 10 sentences. Students may submit their answers to be scored.

Practice making inferences from random samples.

Practice making inferences from random samples.

Practice estimating wildlife population by using the process of random sampling.

Calculate basic summary statistics for a sample or population data set including minimum, maximum, range, sum, count, mean, median, mode, standard deviation and variance.

Practice comparing distributions of data in different forms of graphical representation.

Try these practice problems comparing distributions.