The accompanying table shows the ages (in years) of 11 children and the numbers of words in their vocabulary. Complete parts (a) through (d) below. Click here to view the datatable. Click here to view the table of critical values for the Pearson correlation coefficient
(a) Display the data in a scatter plot. Choose the correct graph below.
B.
OC
D.
Q
84
4
3000
2400
1800
1200
8001
4-
3000
2400
1800
1200
3
600
0
0246
Ape years)
.
Vocabulary
2-
1500 3000
Age years)
1500
3000
Age years)
0 2 4 6 8
Ago years)
(b) Calculate the sample correlation coefficient r.
(Round to three decimal places as needed.)