Suppose that you add 10 to all of the observations in a sample. how does this change the sample mean? how does it change the sample standard deviation?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

What is the equation of a line that passes through points (0, 4) and (-4,-8)?

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x