Measures of Dispersion

Determine the value of x in the cumulative frequency table below.

Which measure of spread should be used to describe the distribution?

Calculate the standard deviation for the following data.

Using the grouped data, solve for the standard deviation.

Given the data find the POPULATION standard Deviation by Calculator.

For the following data find the SAMPLE standard Deviation by Calculator

For the following data find the POPULATION VARIANCE by calculator

Determine the value of x in the cumulative frequency table below.

Which of the following is NOT a measure of dispersion for grouped data? (a) Range (b) Mean (c) Interquartile Range (d) Standard Deviation

What does the interquartile range (IQR) represent? The spread of the entire dataset. The spread of the middle 50% of the data. The difference between the highest and lowest values. The average deviation of data points from the mean.