67%(3)2 out of 3 people found this document helpful
This preview shows page 25 - 29 out of 47 pages.
The mean or average for all the worksites within Sun Coast is 124.83dB. The median or middle number for all noise levels is 125.72dB and the most common level of noise is 127.31dB.
UNIT VII SCHOLARLY ACTIVITY26Evaluation. There are many variables that determine how much dB an employee will be exposed to inthe workplace. These variables can change at anytime and so could the location of the employee. In my opinion, the assumption for parametric statistical data cannot be met because of these many variables. However, if the mean is used for all workplaces, then it can be assumed that all employees will need the best hearing protection as it is over the 120dB range. Independent Samples tTest: Descriptive Statistics and Assumption Testing Frequency distribution table. GroupAFrequencyGroup BFrequency45-55965-75256-651476-853366-751986-952576-851496-105286-956More0More0Histogram. 45-5556-6566-7576-8586-95More05101520Histogram Group APrior Test ScoresFrequency
UNIT VII SCHOLARLY ACTIVITY2765-7576-8586-9596-105More05101520253035Histogram Group BRevised Test ScoresFrequencyDescriptive statistics table. Group A Prior Training ScoresGroup B Revised Training ScoresMean69.79032258Mean84.77419355Standard Error1.402788093Standard Error0.659478888Median70Median85Mode80Mode85Standard Deviation11.04556449Standard Deviation5.192741955Sample Variance122.004495Sample Variance26.96456901Kurtosis-0.77667598Kurtosis-0.352537913Skewness-0.086798138Skewness0.144084526Range41Range22Minimum50Minimum75Maximum91Maximum97Sum4327Sum5256Count62Count62Measurement scale. In my opinion, the measurement scale to use to compare training scores between an updated training course and an original training course would be interval. This method allows data to be compared to show an improvement or deficit in the new training program. Measure of central tendency. The average or mean of the test scores shows an improvement in the new training program. The mean for the original test score was a score of 69 while the mean for the new training was an 84. The median score for the original training program was a 75 while median
UNIT VII SCHOLARLY ACTIVITY28score for the new training was an 85. The most common score for the original training was an 80 while the new training was an 85. Evaluation. According to the descriptive statistics above, it can be assumed that the new training program is more effective than the original training program if you are looking at it from a statistical standpoint. In my opinion, the assumptions for parametric statistical testing were met because the trends do show better test scores with a newer training session with the data provided. Dependent Samples (Paired-Samples) tTest: Descriptive Statistics and Assumption TestingFrequency distribution table. Pre-ExposureFrequencyPost-ExposureFrequency6-1556-15516-25816-25826-351226-351136-451636-451746-55746-55756-65156-651More0More0Histogram.