PRELIM LEC 4 (4): ESTIMATION

Question 1

These provide a means for drawing conclusions about a population given the data actually obtained from the sample. They allow a researcher to make generalizations to a larger number of individuals, based on information from a limited number of subjects

Answer 1

INFERENTIAL STATISTICS

Question 2

▪The basis for decision-making statistical inferences. It refers to a large number of experiences, events or outcomes that will happen in a population in the long run. Likelihood and chance are similar terms.
▪ Examples are usually based on tossing a coin and finding heads or tails. Probabilities are statements of likelihood expressed in values from 0 to 1.0. p = the number of outcomes the total possible outcomes

Answer 2

Probability theory

Question 3

statistics enable us to judge the probability that our inferences or estimates are close to the truth

Answer 3

Statistical inference

Question 4

are theoretical distributions developed by mathematicians to organize statistical outcomes from various sample sizes so that we can determine the probability of something happening by chance in the population from which the sample was drawn. They allow us to know the relative frequency or probability of occurrence of any value in the distribution

Answer 4

Sampling distribution

Question 5

Statistic whose calculated value is used to estimate a population parameter

Answer 5

estimator

Question 6

A particular realization of an estimator

Answer 6

Estimate

Question 7

▪
single number that can be regarded as the most plausible value
▪ ▪
specific numerical value estimate of a parameter.
The best point estimate of the population mean is the sample mean