TI-84

Given vector a = [a1, a2, a3] and vector b = [b1, b2, b3], the dot product of vector a and vector b, denoted…

To find the percentile of a z-score on a TI-84 calculator, you can use the following syntax: normalcdf(-99, z-score, μ, σ) where:…

The central limit theorem states that the sampling distribution of a sample mean is approximately normal if the sample size is large…

A line of best fit is the line that best “fits” the trend of a dataset. This tutorial provides a step-by-step example…

Logarithmic regression is a type of regression used to model situations where growth or decay accelerates rapidly at first and then slows…

Exponential regression is a type of regression that can be used to model the following situations: 1. Exponential growth: Growth begins slowly…

Often in statistics we use confidence intervals to estimate the value of a population parameter with a certain level of confidence. Every…

A probability distribution tells us the probability that a random variable takes on certain values. For example, the following probability distribution tells…

The mean absolute deviation is a way to measure the spread of values in a dataset. It is calculated as: Mean absolute…

Relative frequencies tell us how often certain events occur, relative to the total number of events. For example, the following table shows…