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About this two question i don’t know how to answer

19 viewed last edited 5 months ago
EmpathicCrownPenguin
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1. What does the sign of the correlation coefficient (`r=-0.83`) tell you about the relationship between the number of bacteria colonies and the concentration of antibiotic in the dish?


2. What does the numerical value of the correlation coefficient (`r=-0.83`) tell you about the relationship between the number of bacteria colonies and the concentration of antibiotic in the dish?




Sangeetha Pulapaka
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  1. The sign tells us that we have a negative correlation. It means that an increase in one variable will cause a decrease in the other variable. This means that as the concentration of antibiotic in the dish decreases, the number of bacteria colonies increase.
  2. The numerical value tells us that there is a strong negative correlation between the variables. It tells us that the correlation between the number of bacteria colonies and the concentration of antibiotic in the dish is almost perfect. perfect negative correlation means the relationship that exists between two variables is exactly opposite all of the time and is close to -1.



EmpathicCrownPenguin
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Thank so much :)
Sangeetha Pulapaka
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There is another bit in the question would you like the answer to that too?

EmpathicCrownPenguin
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Yes please and there is another if you can help me in that one is also like the same
EmpathicCrownPenguin
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Yes please