Statistics and probability, explained
Statistics is half calculation and half interpretation. AI Solver does both: it computes the numbers step by step and explains what they mean in the context of the question.
Test scores have mean 70 and standard deviation 8. Find the z-score of 86.
Final answer
z = 2
Solution steps
- 1
Write the z-score formula
z = (x − μ) / σ
- 2
Substitute the values
z = (86 − 70) / 8
- 3
Simplify
z = 16 / 8 = 2
What AI Solver solves in statistics
- Mean, median, mode and spread
- Standard deviation and z-scores
- Probability rules and combinations
- Normal and binomial distributions
- Confidence intervals
- Hypothesis tests
How to get statistics help
- 1
Open the app
Download AI Solver from the App Store and launch it on your iPhone.
- 2
Snap your problem
Point your camera at any question and take a photo. Works with handwritten and printed text.
- 3
Get your answer
AI analyzes the problem and delivers a clear, step-by-step solution in seconds.
Statistics study tips
- Write down what each symbol stands for before plugging in numbers.
- Say your answer in words: 86 is two standard deviations above the mean.
- A probability always lands between 0 and 1; check yours does.
Statistics questions
Yes. It covers AP Statistics, from describing data to inference, with each step and its interpretation.
Snap your next statistics problem
Download on theApp Store