I need help with this plz

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Someone which statements are true? check all that apply.