# Josiah Allen

University of Alabama at Birmingham

Statistics

Statistics teacher | Verified Expert

I earned my degree in Statistics from the University of Alabama at Birmingham, where I developed a strong foundation in data analysis and quantitative reasoning. I have a passion for teaching and helping students understand complex statistical concepts. With my academic background and teaching experience, I am equipped to provide clear explanations and effective guidance in Statistics and related subjects. I am committed to helping students succeed and reach their academic goals.

## Questions

- What is the Generalized Least Squares model?
- What is the variance of the following numbers?: {40; 56; 59; 60; 60; 62; 65; 69; 75; 84}
- What is a minimum-variance, mean-unbiased estimator?
- Why does heteroskedasticity distort the results of a regression analysis?
- How do I perform linear regression on data?
- What is the variance of {17, 3, 10, 1, -3, 4, 19}?
- How is an outlier identified on a residual plot?
- What is the variance of {9, -4, 7, 10, 3, -2}?
- How does r squared related to standard deviation?
- Find the standard deviation of 36,45,14,18,20,24,28,33,47,55,51?
- How do you find the central angle of a pie chart for a section of the pie chart that represents 20% of the pie?
- Experimental/observational studies & relative frequencies?
- How do you use z score to find p value?
- How do you find the z score corresponding to the 27th percentile?
- How do you find the Z score such that the area under the standard normal curve to the left is 0.93?
- What is a latent variable?
- What is a two way ANOVA?
- How would you compare two box and whisker plots?
- How do you make a box and whisker plot from the data: 88, 23, 75, 46, 77, 22, 83, 75, 97, 89, 46, 79, 69, 72, 91, 20, 75, 78, 83, 35, 39, 98, 59, 77, 84, 69, 82, 79, 57, 91?
- What is the z value such that 52% of the data are to its left?