Suppose you convert y = income from British pounds to dollars, and suppose a pound equals 2.00

Question:

Suppose you convert y = income from British pounds to dollars, and suppose a pound equals 2.00 dollars.
a. Explain why the y values double, the mean of y doubles, the deviations (y - ) double, and the standard deviation sy doubles.
b. Using the formula for calculating the correlation, explain why the correlation would not change value.