Which of the following is a description of the data with a correlation coefficient of -0.2?
2 answers:
Answer: Low negative correlation
Step-by-step explanation:
High correlation: The value of correlation coefficient lies between -1 to -0.5 or 0.5 to 1.
Medium correlation : The value of correlation coefficient lies between -0.5 to -0.3 or 0.3 to 0.5.
Low correlation : The value of correlation coefficient lies between -0.3 to -0.1 or 0.1 to 3.
The given correlation coefficient :
Clearly it is negative having minus sign.
Also it lies between -0.3 to -0.1
Hence, the data with a correlation coefficient of -0.2 has a low negative correlation.
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Answer:
12.1
Step-by-step explanation:
The dashed line joining M₁ and M₂ is the hypotenuse of a right triangle as shown in red below.
The base of the triangle is
x₂ - x₁ = 2 - (-3) = 2+ 3 = 5
The height of the triangle is
y₂ - y₁ = 16 - 5 = 11
We can now use Pythagoras' theorem to calculate distance between the two midpoints.
x² = 5² + 11² = 25 + 121 = 146
x = √146 = 12.1
The distance between M₁ and M₂ is 12.1.
