This figure provides an illustrated example of a curvilinear relationship. What does a curvilinear relationship signify? (Select all that apply.)
a. The relationship is more complex than can be illustrated by a straight line.
b. The most positive value of one variable is seldom associated with the most positive value or the most negative value of the other variable.
c. The value of one variable cannot be predicted if the other is known.
d. A relationship represented by an arc explains a large portion of the variation in the independent variable.
e. The relationship between the variables is statistically significant.
f. An increase in the value of one variable may be associated with either an increase or a decrease in the value of the other.
ANS: A, B, F
A relational statement declares that a relationship of some kind exists between or among two or more concepts. Relational statements describe the direction, shape, strength, symmetry, sequencing, probability of occurrence, necessity, and sufficiency of a relationship. The strength of a relationship is the amount of variation explained by the relationship. In regard to shape, most relationships are assumed to be linear. In a linear relationship, the relationship between the two concepts remains consistent regardless of the values of each of the concepts. The relationship can be illustrated by a straight line. Relationships can be curvilinear or some other shape. In a curvilinear relationship, the relationship between the two concepts varies according to the relative values of the concepts. This type of relationship is illustrated by a curved line, as shown in the figure.
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Which statement best explains what happens to cardiac output when the heart rate gets extremely high?
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A client with diabetes checks blood sugar levels daily and carefully administers insulin, but has not been following a diabetic diet
After discussion with the nurse about the importance of diet, the client states intentions to eat regular meals, get sugar substitute and fresh vegetables, throw out potato chips and cookies, and buy a new nonstick frying pan. The client's behavior is an example of: 1. Reappraisal. 2. Secondary appraisal. 3. Coping. 4. Primary appraisal.
The nurse suggests to parents that they use the outpatient surgical center for their child's upcoming surgery. What advantage(s) does this type of facility have to offer? (Select all that apply.)
a. Lower cost b. Less incidence of health care-associated infections c. Reduction of parent-child separation d. Ample time for recuperation at the facility e. Decreased emotional impact of illness