In regression analysis, which statements are true? i. data sets that include an influential point are nonlinear. ii. influential points always reduce the coefficient of determination. iii. all outliers are influential data points. a. l only b. ll only c. lll only d. none are true

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup