Posted: September 14th, 2017

which statistical test is the correct choice for a problem

which statistical test is the correct choice for a problem
Project description
Ask yourself a series of questions to figure out which statistical test is the correct choice for a problem. Provide a law enforcement example using each of the following tests.

What level of measurement is the data?

NOMINAL (CATEGORICAL) OR ORDINAL ? Chi-Square.

How many variables are there?

One variable ? One Way Chi-Square.

(a) Use the mathematical formula or
(b) Set the data up to use in SPSS with Nonparametric Tests ? Chi-Square.

Two variables (both are nominal or ordinal) ? Two Way Chi-Square.

(a) Use the formula to calculate the expected frequencies for each cell and then compute chi-square or
(b) Set the data up to use in SPSS with Descriptive Statistics ? Crosstabs ? Statistics ? Chi-Square

INTERVAL OR RATIO ? t-tests or ANOVA

How many samples or groups are there?

One group ? Single Sample t-test.

(a) There will always be a population mean in the question.
(b) The population mean is entered in the Test Value box in the SPSS One Sample T-Test
Two Groups ? Independent Samples t-test or Dependent Samples t-test

Are the samples independent or dependent?

Two independent samples ? Independent Samples t-test.
(a) Two completely different groups, each measured once

Two Dependent samples ? Dependent Samples t-test.
(a) A single group that was measured twice.
(b) Paired Samples T-Test in SPSS

Three or more groups ? Analysis of Variance (ANOVA)

TO ORDER FOR THIS QUESTION OR A SIMILAR ONE, CLICK THE ORDER NOW BUTTON AND ON THE ORDER FORM, FILL ALL THE REQUIRED DETAILS THEN TRACE THE DISCOUNT CODE,
TYPE IT ON THE DISCOUNT BOX AND CLICK ON ‘USE CODE’ TO EFFECT YOUR DISCOUNT. THANK YOU