(5−x)/5=y(5−x)/5=y

For 5 values (n=5)And I have the mean of y. To get the mean of x I understand the I just move it around so I have:x¯=5−(5×y¯)x¯=5−(5×y¯)

If I also have the SD of mean y; do I just get the mean of x by multiplying it by 5?Example: n = 5, mean y = 0.8, SD y = 0.09

so will mean x = 1, and SD x = 0.45? Or am I completely wrong

Any help would be appreciated.

Best,