HI6007 : Stastics - Frequency Distribution - Stastics Assignment Help

Statistics Assignment Help

TASK 1 Below you are given the examination scores of 20 students 52 99 92 86 84 63 72 76 95 88 92 58 65 79 80 90 75 74 56 99 a. Construct a frequency distribution, cumulative frequency distribution, relative frequency distribution, cumulative relative frequency distribution and percent frequency distribution for the data set using a class width of 10. b. Construct a histogram showing the percent frequency distribution of the examination scores. Comment on the shape of the distribution. TASK 2 Shown below is a portion of a computer output for a regression analysis relating supply (Y in thousands of units) and unit price (X in thousands of dollars). ANOVA Regression                             1                354.689 Residual                               39               7035.262 Intercept                           54.076                    2.358 X                                         0.029                     0.021 What has been the sample size for this problem? Determine whether or not supply and unit price are related. Use ?= 0.05. Determine whether or not demand and unit price are related. Use ?=0.05. Compute the coefficient of determination and fully interpret its meaning. Be very specific. Compute the coefficient of correlation and explain the relationship between supply and unit price.