VEE Mathematical Stats Key Terms

Question 1

Statistical Experiment

Answer 1

• Experiment conducted on a sample taken from a population

Question 2

Statistical Inferences

Answer 2

Inferences made:
- About characteristics of the target population
- By measuring/analyzing observable variables from the sample

Methods:
- Estimation
- Hypothesis Testing

Question 3

Method of Sampling

Answer 3

• Want to select a method to create a sample that properly represents the population of interest
• Want good inferences

Question 4

Simple Random Sampling

Answer 4

• When all possible samples have an equal probability to be chosen from the population
• Uses combinations (not permutations) because order doesn’t matter

Question 5

Statistic

Question 6

Sampling Distribution

Answer 6

• The distribution of a statistic

Question 7

Sample mean:

Answer 7

• Referring to the mean of the sample, not the population
• For normal distribution, = population mean