# Audrey Allen

University of Massachusetts Global

Statistics

Statistics teacher | Tutor for 6 years

I hold a degree in Statistics from the University of Massachusetts Global. With a passion for numbers and data analysis, I specialize in simplifying complex statistical concepts for students. My goal is to empower learners with the skills and confidence needed to excel in mathematics and beyond. Through personalized instruction and real-world examples, I foster a supportive learning environment where students can thrive. Let's embark on a journey of discovery together, where every question is an opportunity to learn and grow.

## Questions

- A set of data has a mean of 127 and a standard deviation of 15. What is the #z#-score of #x=118#?
- Can a matched-pair t-test be used to determine if a group of patients receiving an experimental treatment improve relative to a different group receiving a placebo?
- How do you find the P value for a two tailed test with n=21 and test statistic t =1.557?
- Find the median from this data?
- Data missing for question? :\
- What deterimines the number of degrees of freedom of a chi-squared distribution?
- If data with a normal distribution has a mean of 100 and a standard deviation of 15, what is the probability that a given value is greater than 110?
- How do you evaluate #""_8C_3#?
- What does a regression analysis tell you?
- How do you calculate the covariance between two discrete variables?
- What is the standard deviation of {1, 2, 3, 4, 5, 6, 7}?
- Why is a maximum likelihood estimation consistent?
- What is the regression equation based on the following?: {(4,2),(1,3),(2,3),(4,6),(6,7)}
- How do you find the equation of a regression line with a TI-83?
- How can adjusted r squared be negative?
- A single letter from the word MISSISSIPPI is chosen. What is the probability of choosing an S or a P?
- Can an R-Squared value be greater than 1?
- How should a scatter plot of data look if there is a negative correlation?
- Which chart type do you use to compare distinct objects over time using horizontal bars?
- Is a bell curve symmetric, right-skewed, or left-skewed?