# find P25 for the following data: 2 6 3 4 2 1 2 0 1 3 6 3

1. find P25 for the following data: 2 6 3 4 2 1 2 0 1 3 6 3 2. you are given the following frequency distribution for the # XXXXX errors 10 students made in a test. ERRORS FREQUENCY 0-2 14 3-5 13 6-8 11 9-11 8 12-14 9 Find: a)variance and b)standard deviation 3. An aptitude test has a mean of 220 and standard deviation of 10. Find the corresponding z score for a) a test score of 232 and b) a test score of 212 4. you are given the following data: x y 2 14 3 13 4 11 5 8 5 9 7 4 7 3 Find a) SS(x), b) SS(y), c) SS(xy), d) the linear correlation coefficient, r, e) the slope b1, f) the y-intercept, b0 (small zero) and g) the equation of the line of best fit.