Descriptive statistics
Center, spread, shape, outliers, and choosing the right display for a data set.
Statistics & data analysis tutoring
Online Statistics Tutor — from AP Stats to college data analysis.
Statistics rewards understanding what a number means, not just how it was calculated. Northstar teaches the reasoning behind each test and interval so students can interpret results and defend their conclusions.
$50 / 60 minutes · No contracts · No required packages · No charge for missed sessions
What statistics sessions can cover
Probability
Rules of probability, conditional probability, independence, and random variables.
Distributions
Normal, binomial, and sampling distributions, and the central limit theorem.
Inference
Confidence intervals, hypothesis testing, p-values, and interpreting results correctly.
Regression & correlation
Least-squares regression, residuals, correlation, and what the model does and doesn't say.
AP & college coursework
AP Statistics exam preparation and support for university statistics and data analysis courses.
Taught by a statistics and data specialist
Northstar was founded by Joshua Lizardi, who holds an M.S. in Applied Mathematics, an M.S. in Data Analytics, a B.S. in Mathematics, and a Graduate Certificate in Applied Statistics, with 9+ years of teaching mathematics — including college and graduate-level instruction.
- Live one-to-one sessions through Zoom
- $50 per 60-minute session
- No contracts or required packages
- No charge for missed sessions
- Flexible scheduling
- Payment through Zelle
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Ready to make statistics make sense?
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