Please help me smart people (Geometry) pls answer the problems in the photo!

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?