Formula to multiply the number in cell 4k times standard deviation of the numbers in cell z2 through z10

I don't understand cell z2 through z10
I have never had excel
(4kxz2xz10)
Please write this correctly

2 answers

To indicate a range of cells to be included in a formula, you use a colon between the first and last. Example

To add all the numbers in cells c3 through c8, you'd write =sum(c3:c8)

Something similar is going on here, but I have no clue about how to calculate standard deviation for any reason!

Use + to indicate adding two cells.
Use - to indicate subtracting one cell from the other.
Use * to indicate multiplication.
Use / to indicate division.

READ AND STUDY at least the first three of the links in those search results I sent you before.
http://www.gifted.uconn.edu/siegle/research/normal/stdexcel.htm