John Wells

Virginia Polytechnic Institute and State University
High School Math Tutor

Biography

I studied math, statistics, and actuarial science in college. I have been tutoring professionally for about 10 years in subjects including elementary / middle school math, algebra, geometry, trig, calculus, statistics, discrete math, and SAT math. I love tutoring and will likely continue doing it for a very long time.

Education

BS Mathematics
Virginia Polytechnic Institute and State University
MS Computer Science
Old Dominion University

Educator Statistics

Numerade tutor for 6 years
47 Students Helped

Topics Covered

Maximizing Accuracy with Effective Sampling and Data Analysis
Linear Regression & Correlation: Analyzing Data Relationships
Unlocking Insights with Descriptive Statistics: A Comprehensive Guide
Visualizing Data: Frequency Distributions & Graphs
Hypothesis Testing: Understanding the Basics for Accurate Results

John's Textbook Answer Videos

03:13
The Practice of Statistics for AP

Dem bones Refer to Exercise 19
(a) How would $r$ change if the bones had been measured in millimeters instead of centimeters? (There
are 10 millimeters in a centimeter.
(b) If the $x$ and $y$ variables are reversed, how would the correlation change? Explain.

Chapter 3: Describing Relationships
Section 1: Scatterplots and Correlation
John Wells
03:12
Elementary Statistics a Step by Step Approach

List five reasons for organizing data into a frequency distribution.

Chapter 2: Frequency Distributions and Graphs
Section 1: Organizing Data
John Wells
02:21
Elementary Statistics a Step by Step Approach

Name the three types of frequency distributions, and
explain when each should be used.

Chapter 2: Frequency Distributions and Graphs
Section 1: Organizing Data
John Wells
04:01
Elementary Statistics a Step by Step Approach

How many classes should frequency distributions have?
Why should the class width be an odd number?

Chapter 2: Frequency Distributions and Graphs
Section 1: Organizing Data
John Wells
02:07
Elementary Statistics a Step by Step Approach

What are open-ended frequency distributions? Why are
they necessary?

Chapter 2: Frequency Distributions and Graphs
Section 1: Organizing Data
John Wells
02:25
Elementary Statistics a Step by Step Approach

For Exercises 5–8, find the class boundaries, midpoints, and
widths for each class.

58–62

Chapter 2: Frequency Distributions and Graphs
Section 1: Organizing Data
John Wells
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