Answers for final exam Assignment Example | Topics and Well Written Essays - 1250 words

Answers for final trial - Assignment instance...........................Discrete Participation in online auction............Discrete Amount played out online ......................... unbroken Time ............................................... Continuous (McBurney and White, 2009) b) In entree to the variables above, information were in any case peaceful on total trades severally month. victimisation the SPSS output provided be rugged, come across the dispersal of periodic gross revenue. imagine to comment on Centre, Shape and Spread. (1 ? marks) statistical diffusion of sales has a toy with repute of $ 4178.29 per month with a shopworn excursus of 7011.633. The data is farther skewed to the right, and is wide scattered apart. The skewedness value, the plots and the standard deviation explains this (Gravetter and Forzano, 2010). c) Is the distri thoion of Monthly Sales normal? let off. (1 mark) The distribution is not normal. This is because of the spy deviatio n of the plats from the rightful(a) line as observed in the Normal Q-Q plot. (Hahn and Meeker, 2011) point 2 (3 marks) An investor wants to equate the performance of third managed monetary resource, so she performs an analysis of variance attempt to analyse their returns. The results of this analysis of variance psychometric test and the post-hoc Tukey test be provided below analysis of variance Return add together of self-coloreds df opine Square F Sig. amid Groups 4191.977 2 2095.988 9.627 .000 deep down Groups 669510.465 3075 217.727 Total 673702.442 3077 ten-fold Comparisons Return Tukey HSD (I) storage (J) Fund Mean Difference (I-J) Std. wrongful extradite Sig. 95% cartel Interval raze Bound speed Bound 1.00 2.00 -1.07173 .65147 .227 -2.5993 .4559 3.00 -2.83090* .65147 .000 -4.3585 -1.3033 2.00 1.00 1.07173 .65147 .227 -.4559 2.5993 3.00 -1.75916* .65147 .019 -3.2868 -.2316 3.00 1.00 2.83090* .65147 .000 1.3033 4.3585 2.00 1.75916* .65147 .019 .2316 3.2868 *. The conceive difference is square at the 0.05 take aim. a) Explain why the investor use an ANOVA test. (1 mark) The investor utilize an ANOVA test because the test is sufficient for comparing more than ii sum and canvass think ofs of all(prenominal) pair of variables to come across the one with the highest mean (Rumsey, 2007). b) Interpret the results of the unidirectional ANOVA test. (1 mark) The low p-value, 0.00 that is less that 0.05, from the ANOVA test shows that a significant blood exists among the several(predicate) property at 0.05 level of significance (Comrey and Lee, 2006). c) found on the post-hoc Tukey test, which of the monetary funds had the highest returns? Explain. (1 mark) The mutual fund 3 had the highest returns. This is because its mean is significantly different from, and erectr than the bureau for fund 2 and fund 3 (Hanna and Dempster, 2012). Question 3 (10 marks) A large company wants to compare the performance of two of its franchises . To complete this study, they collected monthly sale revenue data from the Sydney and Newcastle franchises. They believe that the Sydney insert is performing better, but want to conduct a statistical test to originate this fact. If Newcastle is seen to be underperforming, solicitude intends to increase advert for this store. A two- savor t-test is conducted and the hobby output is account from SPSS a. Explain why an mugwump two-sample t-test was utilise rather than a paired samples t-test. (2 mark) An independent two-sample-t test was employ because the two sets of observations were make from different samples, franchises, quite of paired sample tests two sets of observations, each pair from like participants in a sample (Walkenbach, 2013). b. pull through the null and change over hypotheses (2 marks). HO