Question

the following gives the examination Mark of 10 students in a mathematics and history exam mathematics 51 25 33 55 63 38 3553 61 44 history 20 65 36 51 50 77 31 60 5
calculate the rank corrilation cofficient and comment briefly on your result
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Answers

  1. The correlation coefficient between history and math exam scores is of -0.1321, which means that there is a weak negative correlation between history grades and math grades.

    What is a correlation coefficient?

    • It is an index that measures correlation between two variables, assuming values between -1 and 1.
    • If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.
    • If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.
    Using a calculator, inserting the history and math scores, the coefficient is of -0.1321, which means that there is a weak negative correlation between history grades and math grades.
    More can be learned about correlation coefficients at https://brainly.com/question/25815006
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