What is meant by a parameter and a statistic?
Terminology
March 23, 2009Level of Significance
March 23, 2009What is the difference between the P-value and the level of significance of a test?
Hypothesis Testing
March 23, 2009What is a type I and type II error associated with hypothesis testing?
Estimation
March 9, 2009How do you estimate the expected value of a random variable? What assumptions are needed? How much confidence should be placed in such estimates?
Sample Size
March 9, 2009If you start out in the beginning design stage of a statistical project, how large a sample size should you plan to get?
Confidence Interval
March 9, 2009Describe how confidence intervals for means use the central limit theorem or Student’s t distribution in their basic construction.
Central Limit Theorem
March 2, 2009What is the “Central Limit Theorem”? Give a variable from everyday life for which you expect the variable x itself does not follow a normal or bell-shaped distribution.
Standard Deviation
March 2, 2009Give a brief explanation as to why a large standard deviation will usually result in poor statistical predictions, whereas a small standard deviation usually results in much better predictions.
Sampling Distributions
March 2, 2009What happens to the standard deviation of a sample mean distribution as n increases?
Standard Normal Distribution
February 23, 2009Is there any area in the extreme tails of a standard normal distribution?How would you treat any area to the left of a z value smaller than – 3.49? How would you treat any area to the left of a z value greater than 3.49?
