Data Cleaning

  1. use job type “1=RN” and “2=Tech” only.
  2. missing questions and multiple answers to one question are marked as wrong.

Table 1: Question by Question Analysis

##    Question Pre-Training Post-Training P-Value
## 1        Q1       31/109        30/114  0.7649
## 2        Q2       82/108        94/113  0.1867
## 3        Q3        53/97        67/108  0.3212
## 4        Q4       94/108        96/114  0.5723
## 5        Q5       38/107        65/112  0.0011
## 6        Q6       69/107        86/113  0.0758
## 7        Q7       27/107        75/113  <.0001
## 8        Q8       73/107        89/112  0.0656
## 9        Q9       42/103        84/110  <.0001
## 10      Q10      101/104       108/112  >.9999
## 11      IQ1        37/99        32/104  0.3744
## 12      IQ2        34/98        32/104  0.6527
## 13      IQ3        16/93        34/105  0.0148
## 14      IQ4        46/84         77/95  0.0002

Figure 1: Overall

Figure 2: by Jobs Type

Figure 3: by Experience