Is there a relationship between visual acuity and age? Answer to this question based on the data below, which include information on the age of subjects and on their vision, which was established by a standardized measure of visual acuity.

Data file:  anovastudy6.sav
Variables: AGE,VISION 

PERS   AGE     VISION
1       85       2757
2       71       1700
3       23       2116
4       37       1393
5       26       2530
6       42       2107
7       21       2405
8       12       2408
9       14       1719
10      13       2997
11      73       2524
12      39       1532
13      39       2270
14      15       3247
15      40       1969
16      27       1980
17      17       1918
18      48       2178
19      72       1440
20      41       2413
21      38       2005
22      19       2969
23      54       1377
24      47       1552
25      53       1973
26      44       1617
27      69       1358
28      57       2283
29      33       2892
30      16       3390
31      38       1727
32      57       2128
33      74       2117
34      36       2265
35      45       1853
36      66       1736
37      33       1793
38      35       1761
39      35       1617
40      62       2031
41      78       1680
42      45       2351
43      46       1829
44      22       2665
45      29       2352
46      20       1752
47      83       2061
48      15       2064
49      25       1450
50      19       1508 

Answer the following questions:

1. What statistic do you select and why?
    
    
    
2. Do the data meet the assumptions of the statistic? Explain in full.
    
    
    
3. Copy the result of the applicable statistic below.
    
    
    
4. What do these results mean in terms of the research question?