ESTIMATION OF PARAMETERS

Question 1

Z-Score Formula

Answer 1

z = (x-u) / sigma

Question 2

how different population is likely to be from same mean

Answer 2

Standard Error

Question 3

value that represents an unknown parameter of population

Answer 3

Point Estimator

Question 4

range between 2 numerical values, the lower and upper limit

Answer 4

Confidence Interval

Question 5

degree of possibility that the population parameter falls within the confidence interval

Answer 5

Confidence Level / Degree of Confidence

Question 6

maximum error of estimation

Answer 6

Margin of Error (E)

Question 7

Margin of Error (E)

Answer 7

E = z ( (sigma) / sqrt(n) )

Question 8

Steps in Getting Critical Value

Answer 8

1. Solve for df
2. Solve for alpha
3. [(df),(100-alpha)]
4. Look at t-table

Question 9

part of sample size that has freedom to change without affecting sample mean

Answer 9

t-distribution / degrees of freedom

Question 10

range between 2 values: the lower and upper limit that approximates the parameter

Answer 10

confidence interval

Question 11

difference between point estimator and actual parameter value

Answer 11

margin of error / sampling error

Question 12

the _____ the margin of error, the ____ the confidence level of results

Answer 12

lower, higher

Question 13

^p

Answer 13

sample proportion / p-hat

Question 14

^q

Answer 14

1-^p / q-hat