Jeff has 30 problems to do for math homework, and he fhinshed 60% of them before play practice. How many problems did he finish
1 answer:
You might be interested in
Answer:
Asnwer is A
Step-by-step explanation:
since the correlation between the FFQ and DR is 0.89
x y xy
8.26 1.68 13.8768 68. 2276 2.8224
0.83 0 0 06889 0
20.13 15.1 303.963 405.2169 228.01
11.16 7.49 83.5884 124.5456 56.1001
7.18 12.84 92.1912 51.5524 164.8656
1.76 0 0 3.0976 0
22.46 25.06 567.8596 513.4756 628.0036
-----------------------------------------------------------------------------------------------------------
∑ = ∑
= ∑
= ∑
= ∑
=
71.98 62.17 1061.479 1166.8046 1079.8017
-------------------------------------------------------------------------------------------------------------
Correlation Coefficient or Pearson Correlation is given by:
the rest calculation is in the attached image
