NON PARAMETRIC

Question 1

is used test is used when the population from which the samples are selected is not normally distributed or distributed in any other particular way.

Answer 1

nonparametric test

Question 2

are used to test hypotheses about population parameters when the assumption about normality cannot be met.

Answer 2

Nonparametric Statistical Tests

Question 3

Give at least 2-3 advantages of Non parametric tests

Answer 3

They can be used to test population parameters when the variable is not normally distributed.

They can be used when the data are nominal or ordinal.

They can be used to test hypothesis that do not involve population parameters.

In some cases, the computations are easier than those for the parametric counterparts

They are easy to understand.

There are fewer assumptions that have to be met, and the assumptions are easier to verify.

Question 4

Give 2-3 disadvantages of Non parametric test

Answer 4

They are less sensitive than their parametric counterparts when the assumptions of the parametric methods are met. Therefore, larger differences are needed before the null hypothesis can be rejected

They tend to use less information than the parametric tests.

They are less efficient than their parametric counterparts when the assumptions of the parametric methods are met. That is, larger samples sizes, are needed to overcome the loss of information

Question 5

is the positioning of a data value in a data array according to some rating scale

Answer 5

Ranking

Question 6

What happens if two or more speakers receive the same number of points?

Answer 6

Add the two same ranks and divide by and divide to the number of the same ranks

Question 7

What table is used to find the critical value for the sign test

Answer 7

Table J

Question 8

___ the null hypothesis if the smaller number of positive or negative signs is less than or equal to the value in the table.

x </= crit

Answer 8

Reject

Question 9

The test value for sign test is the number of

Answer 9

less frequent signs

Question 10

The sign test for a single sample is a nonparametric test used to test the value of a population ______

Answer 10

median

Question 11

Sign test is non-parametric version of

Answer 11

one-sample t test

Question 12

Used to find the crit value for sign test

Answer 12

J table
Alpha
N-0

Question 13

In sign test, the test value is____

Answer 13

Count the number of + and - signs in step 2, and use the smaller value as the test value.

Question 14

If the test value is less than or equal to the critical value, the null hypothesis is

Answer 14

Rejected

Question 15

WILCOXON RANK SUM TEST: The nonparametric equivalent to the

Answer 15

independent t test

Question 16

WILCOXON RANK SUM TEST is also called

Answer 16

Mann-Whitney Test or Mann-Whitney U test

Question 17

WILCOXON RANK SUM TEST:

Samples are random and must be

The size of each sample test is a nonparametric test that to

Answer 17

greater than or equal

10

Question 18

test two independent samples uses ranks to determine if populations that have the same were selected from distributions.

Answer 18

Wilcoxon rank sum

Question 19

WILCOXON SIGNED-RANK TEST
Non-parametric equivalent to the

Answer 19

paired t-test for dependent samples

Question 20

is a nonparametric test used to test whether two dependent samples have been selected from two populations having the same distributions.

Answer 20

Wilcoxon signed-rank test

Question 21

KRUSKAL-WALLIS TEST
Non-parametric equivalent of

Answer 21

one way ANOVA

Question 22

KRUSKAL-WALLIS TEST alao known as the

Answer 22

H test

Question 23

Can be used to compare three or more means

Size of the sample must be at least 5

Answer 23

KRUSKAL-WALLIS TEST

Question 24

test is a nonparametric test that is used to determine whether three or more samples came from populations with the same distributions.

Answer 24

The Kruskal-Wallis

Question 25

SPEARMAN RANK CORRELATION COEFFICIENT
Non parametric equivalent to the

Answer 25

Pearson coefficient

Question 26

Use to investigate whether two variables are related by analyzing the ranks of matched-pair data

Answer 26

SPEARMAN RANK CORRELATION COEFFICIENT

Question 27

The ___________________ is a nonparametric statistic that uses ranks to determine if there is a relationship between two variables

Answer 27

Spearman rank correlation coefficient