


Hunter Aldridge
Seminole State College of Florida
Statistics
Statistics teacher | Tutor for 5 years
I earned my Statistics degree from Seminole State College of Florida. Equipped with a deep understanding of data analysis and interpretation, I'm here to guide you through the world of numbers. From probability theory to hypothesis testing, I'm committed to helping students grasp complex statistical concepts with clarity and confidence. Let's work together to unlock the mysteries of data and excel in your academic journey.
Questions
- Suppose that X is a continuous random variable whose probability density function is given by: #f(x)= k(2x - x^2) for 0 < x < 2#; 0 for all other x. What is the value of k, P(X>1), E(X) and Var(X)?
- What is an example of a continuous random variable?
- What is the probability that the person visited the gift shop, given that the person did not watch the film?
- How many ways can 6 different books be arranged on a shelf?
- What are the variance and standard deviation of {2,9,3,2,7,7,12}?
- When picking a random card from a standard deck, what is the probability of drawing a card that is less than a 10 (and so not K, Q, J, 10)?
- What is the variance of {-4, 5, 8 ,-1, 0 ,4 ,-12, 4}?
- What is the variance of {-4, 19, -3, 8, -10}?
- If a single card is drawn from an ordinary deck of cards, what is the probability of drawing a jack, queen, king, or ace?
- Under what conditions can you not use a pie chart to display categorical (qualitative) data?
- What is the special name for a bar chart that displays the bars' frequencies from greatest to least?
- Can you determine the coefficient of determination from the correlation coefficient?
- How do you find the correlation of a scatter plot?
- A test has a mean of 153 and a standard deviation of 12, how do you find the test scores that correspond to (a) z= 1.2 and (b) z = -2.4?
- How do you find the z-score for which 95% of the distribution's area lies between -z and z?
- How do you find the z-score for an IQ test score of 142 when the mean is 100 and the standard deviation is 15?
- How do you distinguish between whether should use a permutation and a combination for a given problem?
- What are the minimum, first quartile, median, mean, third quartile, and maximum of the following data set?: 10, 4, 9, 13, 5, 11, 5, 3, 7, 5
- What is meaning of mean, median and quartile?
- How do you derive the variance of a Gaussian distribution?