The Science of Psychology Assignment

141. A correlation coefficient represents two things: ______________________ and ______________________.

a) a representative sample; strength

b) strength; direction of the relationship

c) the experimental group; control group

d) direction of the relationship; expectant functionality

142. A correlation coefficient shows that smoking and life expectancy are indeed related. As a result, a researcher could predict _____________ if the direction of the relationship is known.

a) if a person smokes a lot of cigarettes, he or she will have less money monthly to buy gas

b) the person’s life expectancy will go up or down based on the number of cigarettes the person smokes daily

c) if a person smokes cigarettes, he or she will eventually develop lung cancer

d) a person’s lungs will repair themselves and he or she will live a longer life

ORDER COMPREHENSIVE SOLUTIONS NOW

143. A correlation coefficient shows that alcohol consumption and driving accidents are indeed related. As a result, a researcher could predict _____________ if the direction of the relationship is known.

a) the number of arrests a person has will go up or down based on the type of car an individual drives

b) the number of driving accidents a person has will go up or down based on the number of alcoholic drinks consumed

c) the number of arrests will increase the fewer drinks an individual consumes

d) the number of driving accidents a person has will contribute to the number of days spent in jail

144. All of the following variables, except for show a positive correlation.

a) height and weight

b) men’s educational level and their income

c) alcohol consumption and scores on a driving test

d) school grades and IQ scores

145. All of the following variables, except for show a negative correlation.

a) average income and the incidence of dental disease

b) adult shoe size and IQ scores

c) the value of a car and the age of a car

d) hours spent watching TV and grade-point average

146. Professor Holden gives a psychology exam on the origins of intelligence. She gives a short answer question based on the IQ scores of a parent–child pair. In order to answer the question correctly, her students need to remember that ________________. The Science of Psychology Assignment

a) a parent’s high IQ does not necessarily cause a child to have a high IQ

b) given these variables, the correlation will be positive

c) given these variables, the correlation will be negative

d) given these variables, the correlation will be uncorrelated

147. A negative correlation means that ______________________.

a) high values of one variable are associated with low values of the other

b) high values of one variable are associated with high values of the other

c) low values of one variable are associated with low values of the other

d) there is no relationship between the two variables

148. Which of the following statements is correct concerning correlation coefficients?

a) A correlation of +.89 is strong and –.89 is weak.

b) A correlation of +.89 and –.89 are both strong and equally so.

c) Correlation coefficients are indicators of cause and effect.

d) A correlation of +1.5 is very strong

149. A perfect correlation, whether positive or negative, is _____________ in the real world.

a) expected

b) imperfect

c) common

d) rare

150. As a project for a psychology course, a student correlated weight and intelligence scores for 250 students. The computed correlation coefficient was .00. What did the scatter plot look like?

a) a random distribution of points

b) a line with a positive slope.

c) a straight line from the lower left to the upper right-hand corner

d) a straight line from the upper left to the lower right-hand corner, The Science of Psychology Assignment.