Which of the following statements is correct?

a. changing the units of measurements of the explanatory or response variable does not change the value of the correlation.

b. a negative value for the correlation indicates that there is no relationship between the two variables.

c. the correlation has the same units (e. g., feet or minutes) as the explanatory variable.

d. correlation between y and x has the same number but opposite sign as the correlation between x and y.

answer is a

step-by-step explanation:

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32