Tools
Statistics Calculator
Enter a list of numbers to get the mean, median, mode, range, variance and standard deviation.
Frequently asked questions
What can the Statistics Calculator work out?
Enter a list of numbers, for example a set of test marks, and it calculates the mean, median, mode, range, variance and standard deviation for that data, following the KSSM Form 4 measures of dispersion methods for ungrouped data. Use it to check the values you got from your own working.
Does this calculator handle grouped data with a frequency table?
No, it is built only for ungrouped data, a plain list of values, matching what Form 4 covers. Grouped data uses class midpoints and Σf in a frequency table instead, which needs a different set of steps, so work those questions out by hand using your notes on grouped measures of dispersion.
Is the calculator's answer accepted for exam marks?
No, it is only a study aid for checking your own working. In 1449/2, marks are given for the method, listing Σx and Σx² correctly and substituting them into the formula, not just the final value, so practise the full calculation by hand and use this tool only to verify your answer.