Find the median, lower quartile, upper quartile, and interquartile range for each data set.
45,000
40,570
76,920
28,820
51,680
55,370
43,690
64,850
58,770

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Which graph corresponds to the function f(x) = x2 + 4x – 1?

On a cm grid, point p has coordinates (3,-1) and point q has coordinates (-5,6) calculate the shortest distance between p and q give your answer to 1 decimal place