Viadrome Case

Case Study #2: Viadrome

For this case study, we need to analyze the data given in the excel file and present our conclusions. DESCRIPTIVE STATISTICS for each of the five observations

Operator A Mean Standard Error Median Mode Standard Deviation Sample Variance Range Minimum Maximum Sum Count 0,255 0,038 0,200 0,000 0,460 0,212 2,000 -0,700 1,300 38,300 150 Operator B 0,534 0,054 0,500 0,500 0,657 0,432 3,600 -1,500 2,100 80,120 150 Operator A repeat 0,333 0,037 0,300 0,000 0,448 0,201 2,000 -0,600 1,400 50,000 150 Diff OA - OB -0,078 0,022 0,000 0,000 0,267 0,071 1,800 -1,200 0,600 -11,700 150 Diff OA - OAR -0,279 0,028 -0,300 -0,300 0,341 0,116 2,500 -1,000 1,500 -41,820 150

Covariance

Operator A Operator A Operator B Operator AR 0,210205 0,261978 0,169622 0,428987 0,241616 0,199689 Operator B Operator AR

GRAPHIC Tools Analysis

Measures

2,50 2,00 1,50 1,00 0,50 0,00 -0,50 -1,00 -1,50 -2,00 Operator A Operator B Operator A rep 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96 101 106 111 116 121 126 131 136 141 146

In the above graph, we have represented each of the measures from Operator A, Operator B and Operator A rep. As we can see, there are considerable differences not only between the two different operators but also between the measures that Operator A did on two different times.

We have also prepared the histograms for the five variables given in the excel file, however we have not been able to find any similarity whatsoever between the variables. Seems like each Operator is measuring different samples or using different measurement machines, when these are not the cases.

Operator A's Measurements

Frequency Frequency 20 10 0 -1,50 -1,20 -0,90 -0,60 -0,30 0,00 0,30 0,60 0,90 1,20 1,50 20 10 0

Operator B's Measurements

Measurements

Operator A rep's Measurements

Frequency 20 10 0 -1,50 -1,20 -0,90 -0,60 -0,30 0,00 0,30 0,60 0,90 1,20 1,50 Measurements

Diff OA - OB

Frequency 20 0 -1,50 -1,20 -0,90 -0,60 -0,30 0,00...