Which statement below is incorrect
the mean is not affected by the existence of an outler
(b) the median is not affected by the existence of an outlet
(c) the standard deviation
affected by the existence of an outler

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

What is the length of the unknown leg in the right triangle ?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out