Which parametric statistical test( s )compares the difference between mental status scores for patients with dementia ( Group 1 )and patients with confusion from dehydration ( Group 2 )? (Select all that apply.)
A) The t test
B) Pearson Product Moment Correlation Coefficient
C) Chi-square
D) Analysis of variance ( ANOVA )

Question

Quizplus · Accepted Answer

Correct A: The t statistic tests where two group meAnswer are different; the dependent variable is mental status scores; there are two groups,dementia patients (Group 1)and dehydration patients (Group 2).Group is the independent variable.
Correct D: ANOVA may be used to test whether the group meAnswer differ just as the t test does.
Incorrect B: This test measures the association of two variables measured at ratio or interval levels; the example has an independent variable measured at nominal level and a dependent variable measured at interval or ratio level.
Incorrect C: The chi-square statistic compares nominal level variables.Group is scaled at the nominal level,but mental status is not very likely scaled at interval level.

Which Parametric Statistical Test( S )Compares the Difference Between Mental