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Correlation

Correlation (Question)

By using the information from the table below, calculate the correlation between the following set of variables:

  1. x1 & x2
  2. x3 & x4
  3. x5 & x6
  4. x7 & x8
  5. x9 & x10

Guide:

Correlation Formula = Covariance(x,y)/(Standard Deviation x * Standard Deviation y)

Correlation (Answer)

  1. -0.004
  2. -0.277
  3. 0.066
  4. -0.314
  5. -0.386
x1 x2 x3 x4 x5 x6 x7 x8 x9 x10
2 2 5 3 1 2 1 5 3 3
0 5 0 4 3 5 3 1 0 4
1 5 1 3 1 2 5 0 2 2
2 0 2 2 3 3 2 1 3 4
5 5 1 3 4 5 5 1 2 5
0 1 3 3 5 3 3 0 2 1
1 4 1 1 0 4 5 3 4 0
0 2 4 0 4 4 3 3 5 1
0 2 5 3 3 0 1 0 3 0
3 4 0 3 3 4 4 1 1 2
5 1 2 0 5 1 2 4 5 3
2 3 1 3 4 1 2 5 0 2
2 0 0 3 5 5 5 1 5 1
1 4 3 1 3 0 4 4 5 1

 

About Dr Loo - O-level & JC H2 math tutor

I am Dr Loo, a PhD holder with 8 years of teaching experience on secondary school and tertiary level specialize on mathematics and statistics. In addition, I also received teaching training under tertiary setting. Furthermore, I have published 5 research papers on international peer reviewed journals. If you are currenlty looking for mathematics tuition in Singapore, I do provide O-level Math Tutoring & JC Math Tutoring (H1 Math Tuition Class & H2 Math Tuition Class).

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