Statistics
Statistics guides,
including what it means.
In statistics the number is half the answer and the interpretation is the other half. These guides do both, because an exam will ask for both.
Guides
Standard Deviation, Explained
What standard deviation measures, the five steps to calculate it, and why sample and population versions divide by different numbers. Worked examples and practice.
Mean vs Median
The mean uses every value; the median ignores how extreme the extremes are. Which one a skewed data set needs, with worked examples and practice.
What this covers
- Mean, median, and which one a question wants
- Variance and standard deviation, by hand
- Sample versus population, and why n minus 1 exists
Working on one right now?
Select the problem on the page or snap it, and Solvecoon works it through with the steps.
Add to Chrome →Free to try — 5 solves every day. No credit card.