# Oliver Aldrich

Washington & Jefferson College

Statistics

Statistics teacher | Experienced educator in USA

I'm a Statistics graduate from Washington & Jefferson College, passionate about unraveling the intricacies of data and its real-world applications. With a solid foundation in statistical theory and methods, I thrive on helping students grasp complex concepts with clarity. Whether it's probability theory, regression analysis, or data visualization, I'm dedicated to fostering a deep understanding and appreciation for the power of statistics. Let's embark on a journey to demystify numbers together and unlock their potential in various fields.

## Questions

- How do you find the median of 37, 54, 50, 29, 34, 41?
- A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .03 significance level. What is the p-value?
- How do you find the area under the standard normal distribution curve between z = 0 and z = 0.75?
- What is the 95% t confidence interval for the mean BMI of all young women?
- Why is the range of a data set seldom used in statistical analysis?
- How does the normal distribution relate to the real world?
- What is the formula for the variance of a geometric distribution?
- Suppose that U has a uniform distribution on [0, 1] and that, conditional on U = u, the distribution of V is uniform on [0, u]. What is the probability density function of V?
- What is the Ordinary Least Squares of a data set?
- If X and Y are correlated random variables, what is Var(XY)?
- What is the variance of {3,6,7,8,9}?
- A fruit bowl contains 4 green apples and 7 red apples. What is the probability that a randomly selected apple will be green?
- How do you evaluate #""_10C_8#?
- What is the probability that a card chosen at random from a standard deck of cards will be a number card?
- What is the formula for finding an outlier?
- How do you make a bar chart?
- What is the addition rule for mutually exclusive events?
- Is time discrete or continuous? Why?
- What is a relative frequency distribution?
- Find the values of #Q_1#, #Q_2#, and #Q_3# for the following data values: 6, 8, 13, 15, 16, 16, 18