Statistics: location, spread and grouped data

Question 1 of 10

The marks of eight students are 4, 6, 7, 7, 8, 9, 10, 13. Find the mean, median, mode and standard deviation (to 2 d.p.).

Question 2 of 10

A cumulative frequency curve is used to estimate the median and quartiles. Describe how to draw and use it.

Question 3 of 10

The scores 2, 3, 4, 5, 6 occur with frequencies 4, 3, 4, 3, 1 respectively. Find the mean, to 2 decimal places.

Question 4 of 10

The median of 6, 10, 14 is ___

Question 5 of 10

Find the standard deviation of 2, 3, 4, 5, 6 to 2 decimal places.

Question 6 of 10

Find the variance and standard deviation of 2, 4, 4, 4, 5, 5, 7, 9.

Question 7 of 10

The mean is affected by extreme values.

Question 8 of 10

Find the variance of 3, 6, 9.

Question 9 of 10

Find the variance of 5, 7, 9.

Question 10 of 10

The median of 4, 7, 10 is ___