Question

stereograms appear to be composed entirely of random dots. however, they contain separate images that a viewer can “fuse” into a three - dimensional (3d) image by staring at the dots while defocusing the eyes. an experiment was performed to determine whether knowledge of the embedded image affected the time required for subjects to fuse the images. one group of subjects (group nv) received no information or just verbal information about the shape of the embedded object. a second group (group vv) received both verbal information and visual information (specifically, a drawing of the object). the experimenters measured how many seconds it took for the subject to report that he or she saw the 3d image. complete parts a and b.

b) for the fusion time variable, is it quantitative or categorical? if quantitative, what are the units?

a. fusion time and qtlup
b. fusion time and age
c. fusion time and the 3 - d image viewed
d. fusion time is a variable with

Explanation:

Step1: Define quantitative and categorical variables

Quantitative variables are numerical and can be measured. Categorical variables are non - numerical and represent groups or categories.

Step2: Analyze fusion time

Fusion time is a numerical measure of how long it takes for a subject to report seeing a 3D image. It can be measured in seconds. So it is a quantitative variable.

Step3: Determine units

Since it measures time, the units are seconds.

Answer:

Quantitative; seconds