Data Analysis of noise study Essay Example | Topics and Well Written Essays - 1250 words

Data Analysis of noise study - Essay ExampleFinally, this scale has an absolute or fixed zero point. An employee who scores a zero in test must hold answered all the questions incorrectly.The ANOVA is used whenever there are three or more groups to compare. In this mooring it would be an appropriate tool because there are three groups to compare Constant Sound, Random Sound and with No Sound.(There is no difference in the spurious productivity of those who have play down music at constant volume, those who have background music at periodically varying volumes and those who do not have background music at all)(There is a difference in the signify productivity of those who have background music at constant volume, those who have background music at periodically varying volumes and those who do not have background music at all.)The test results are statistically significant at the 5% level that is, at the 5% significance level, the data do provide sufficient evidence to conclude t hat there is a difference in the mean productivity of employees who have background music at constant volume, those who have background music at periodically varying volumes and those who do not have background music at all.Once we have obtained the results from One-Way ANOVA, follow-up tests are required to find out which groups mean significantly differs from the other group means. The test which we will be conducting is called Tukey HSD test.(i) Since 2.766 (ii) The second part shows that 3.631 3.57 accordingly there is a significant differences in the mean productivity of the group which have background music at constant volume and the group which who had no background music.(iii) Finally, the results of the last part reveal that as 0.864 3.57 therefore there are no significant differences in the