9 it is only appropriate and possible to calculate the variance and standard deviation as measures of variability for variables
measured using an) scale of measurement
10
A
ordinal
ordinal or nominal
ratio
interval or ratio

Which of the following is an equation of a line parallel to the equation y=4x+1?

Convert (-3,0) to polar form. a. (3,0’) b. (-3,180’) c. (3,180’) d. (3,360’)

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)