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What are the Range and Standard Deviation?

The Math Dude

Standard Deviation: A 5 Step Process Calculate the mean. Find mean of square differences (variance) Take square root of the deviance. Source: The Math Dude

Quartiles are more intuitive than the mean and s.d. for samples from skewed distributions.

Quartiles are more intuitive than the mean and s. for samples from skewed distributions.

You use hypothesis tests to challenge whether some claim about a population is true (for example, a claim that 40 percent of Americans own a cellphone). To test a statistical hypothesis, you take a sample, collect data, form a statistic, standardize it to form a test statistic (so it can be interpreted on a standard …

Statistics Formula sheet-- "Claims of fact assert that a condition has existed, exists,or will exists and that their support consists of factual information" (Birk This type of claims sometimes are backed by things like statistics, etc.

Summarizing the Bell Curve - Useful for interpreting statistical reports and formal measurement results.

Summarizing Statistics (Bell Curve Distribution) Poster

Shop Summarizing Statistics (Bell Curve Distribution) Poster created by wordsunwords.

A z-score is how much a value deviates from the mean...Calculate Z Scores Step 4 Version 2.jpg

Calculate Z Scores

A z-score is how much a value deviates from the mean.Calculate Z Scores Step 4 Version

How to choose a statistical model - Data Science Central

A statistical model consists of some assumptions that are observed after insights are produced from big data. The insights are then used to form a model so that you can categorize them according to their diversity. This infographic describes exactly which

GOALS  One of my goals is to take stat by next fall and be done with all my math requirements.

Statistics

Statistics Laminate Reference Chart: Parameters, Variables, Intervals, Proportions (Quickstudy: Academic ): PThis guide is a perfect overview for the topics covered in introductory statistics courses.

love the "notice and wonder" approach!  Summation notation

Summation Notation also known as Sigma Notation. A simple way of expressing the sum of the values of a sequence. This is seen in PreCalculus, Calculus 1 (AP Calc AB), and Calculus 2 (AP Calc BC).