One and Two Sample Interference

Question 1

this is the analysis and interpretation of data

Answer 1

inferential

Question 2

parametric and non parametric test

Answer 2

inferential

Question 3

are the test applied to data that are normally distributed

Answer 3

parametric test

Question 4

parametric test is usually expressed in

Answer 4

interval and ratio

Question 5

in parametric test, the skewness is equal to

Answer 5

zero

Question 6

in parametric test, the kurtosis is equal to

Answer 6

0.265

Question 7

True or False

parametric test is more powerful than non parametric test

Answer 7

true

Question 8

what is the non parametric equivalent of paired t test

Answer 8

wilcoxon rank sum test

Question 9

what is the non parametric equiavalent of unpaired t test

Answer 9

mann-whitney u test

Question 10

its non parametric equivalent is spearman correlation

Answer 10

pearson correlation

Question 11

what is the nonparametric equivalent of one way analysis of variance

Answer 11

kruskal wallis test

Question 12

procedures in hypothesis testing

Answer 12

1. formulate the null and alternative hypothesis
2. choose a level of significance
3. choose the appropriate test statistic
4. establish critical region
5. decision (accept null if outside the critical region)
6. conclusion

Question 13

if the computed t-statistics is less than the critical value, does it fall in the critical region?

Answer 13

it does not fall in the critical region

Question 14

if the critical value falls in the critical value, should we reject or accept?

Answer 14

reject

Question 15

this table is used to find the critical values based on 95% confidence level and alpha at 0.05

Answer 15

t table

Question 16

this test involves the direction and the degrees of freedom in determining the probability or the critical value

Answer 16

t table

Question 17

number of observations, and the data that are free to vary when estimating a statistical parameter

Answer 17

degrees of freedom

Question 18

degrees of freedom used to calculate what kind of values?

Answer 18

t-values and p-values

Question 19

it is used when you want to test if the sample’s mean from which the sample is drawn is at a hypothesized value

Answer 19

one sample interference

Question 20

it is typically implemented on small samples

Answer 20

one sample interference

Question 21

the purpose of this is to determine if the sample observation could have come from a process that followes a specific parameter like the mean

Answer 21

one sample interfence

Question 22

it is used to determine whether the mean of a sample data set is different from a known value

Answer 22

one sample mean test

Question 23

True or False

small sample size makes the test more conservative means that the small but important differences may be detected

Answer 23

False (small but important differences may NOT be detected)

Question 24

True or False

increasing sample size makes the statistical test more powerful

Answer 24

true

Question 25

if outliers have a lot of influence on the results, what non parametric test might be appropriate to use?

Answer 25

wilcoxon rank sum test

Question 26

what is the result of one sample mean test called?

Answer 26

student fisher distribution

Question 27

what is the usual norm level of significance according to researchers?

Answer 27

0.05

Question 28

This is used to determine the mean differences between two sets of the observations from the same sample is zero
○ each subject is measured twice leading to pairs of observations

Answer 28

paired t test

Question 29

where do we drawn samples for paired t test

Answer 29

samples are drawn from the same population

Question 30

Used in experimental design to test the effectiveness of a
certain technique or method or program that had
developed

Answer 30

paired t test

Question 31

two types of t test

Answer 31

one sample and two sample interference

Question 32

Used to determine the inference for a difference in the
means of two normal distribution

Answer 32

two independent mean test

Question 33

what is the non parametric test perform if the assumptions are not met in two independent variable

Answer 33

welch t test

Question 34

Used to determine if two populations are equal
and Determine if the difference is significant

Answer 34

two independent mean test

Question 35

sample less than 30 (n<30)

Answer 35

one sample mean test

Question 36

population less than 30 (N<30)

Answer 36

two independent mean test

Question 37

this identifies which of the variance will be used for the interpretation (equal variances assumed or equal variances not assumed)

Answer 37

Levene’s Test for Equality of Variances