DrMoynihan Conducts a Study Examining the Relationship Between the Number

question 45

Essay

Dr.Moynihan conducts a study examining the relationship between the number of panic attacks a person experienced in the past month,the number of nightmares experienced in the past month,and people's levels of neuroticism (a personality trait characterized by instability,anxiety,and worry).She collects a convenience sample of 50 community college students (25 males,25 females).Below are her findings.
-A-number of panic attacks in the past month and neuroticism: r = -.03,not sig.
-B-number of panic attacks in the past month and number of nightmares in the past month:
r = -.14 (p = .05)
-C-number of nightmares in the past month and neuroticism: r = .48 (p = .003)

-Imagine that Dr.Moynihan is concerned about curvilinear relationships.Which of the three relationships is most likely to be affected by a curvilinear relationship? How should Dr.Moynihan check for this type of relationship? Why would this be effective?

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Definitions:

Direct Materials Price Variance

The difference between the actual cost of direct materials and the standard cost, multiplied by the actual quantity purchased.

Actual Costs

The real expenses incurred for goods, services, or other operational activities during a specific period of time.

Standard Costs

The practice of assigning an expected cost to products, with the aim of assessing performance by comparing these costs to actual costs.

Direct Labor Time Variance

The cost associated with the difference between the actual hours and the standard hours of direct labor spent producing a commodity multiplied by the standard direct labor rate per hour.