At the optometrist's office, andre failed to distinguish numbers on the color designs shown to him. andre most likely has

I believe the answer is: color-deficient vision

color-deficient vision refers to the inability of our eyesight to distinguish complete set of colors.  this deficiency could be caused by either injury to the photoreceptor in the retina or could be caused by genetic factors that inherited ever since the patient was born.

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !

if you have to make a general question and respond to your thoughts, then this isn't really a question someone can you on. read the passage, form your question, and answer using your thoughts. no one else can understand how you interpreted this text if you don't tell us.