Test norms consist of data that make it possible to determine the relative standing of an individual who has taken a test. By itself, a subject's raw score (e.g., the number of answers that agree with the scoring key) has little meaning. ... Norms provide a basis for comparing the individual with a group.
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Both A and D work, considering that pent up stress causes all sorts of negative emotions, it really works for either one. I really wouldn't know which one to choose! If you absolutely had to, then A, because not everyone has a tendency to strike others. It does increase the probability of it happening.
Random selection (D) you most take a small portion of the large population and analyze that and guess for the rest, an educational guess.
Answer:
Christina will enter the exhaustion phase
Earth moving vehicles
construction vehicles
material handling
construction equipment
