Question : 41) If x increases whenever y decreases, then x and : 1240367

 

 

41) If x increases whenever y decreases, then x and y are

A) not related.

B) positively related.

C) directly related.

D) negatively related.

E) related but whether positively or negatively related depends on whether the x variable or the y variable is plotted on the vertical axis.

 

42) Whenever one variable increases, another variable decreases. The two variables are

A) definitely related through a third variable.

B) negatively related.

C) positively related.

D) unrelated to each other.

E) related but whether positively or negatively related depends on which variable is plotted on the vertical axis.

43) If x increases and as a result y decreases, then x and y are

A) not related because the relationship is a causal one.

B) positively related.

C) negatively related.

D) directly related.

E) trend-line related.

 

44) “As the price of gasoline increases, fewer people buy cars that are gas guzzlers.” A graph showing this relationship would

A) have a negative slope.

B) have a positive relationship.

C) have a direct relationship.

D) be a horizontal line.

E) be a vertical line.

 

45) As the number of days without rain increases, the amount of wheat grown per acre declines. A graph showing this relationship shows

A) a horizontal line.

B) a vertical line.

C) a positive relationship.

D) a line with a positive slope.

E) None of the above answers is correct.

46) As the price of home heating oil rises, families buy less home heating oil. Hence a scatter diagram with the price of home heating oil on the vertical axis and the quantity purchased on the horizontal axis reveals a ________ relationship.

A) positive

B) linear

C) time-series

D) negative

E) cross-sectional

 

47) If the change in y = -4 and the change in x = 2, there is

A) an independent relationship between y and x.

B) a positive relationship between y and x.

C) a negative relationship between y and x.

D) no relationship between y and x.

E) a relationship between x and y but more information is needed to determine if it is a negative or positive relationship.

 

48) An independent relationship between two variables is shown in a graph by

A) an upward-sloping line.

B) a horizontal or a vertical line.

C) a downward-sloping line.

D) a steeply sloped line.

E) any straight line curve.

49) If two variables are unrelated, their graph is

A) either a horizontal or a vertical line.

B) a downward-sloping line.

C) an upward-sloping line.

D) a curved line.

E) None of the above answers is correct because it is not possible to graph unrelated variables.

 

50) Consider a diagram in which the variable measured on the y-axis remains constant while the variable measured on the x-axis increases. The graph of these two variables is

A) a vertical line.

B) a horizontal line.

C) a line that has positive slope.

D) a line that has a negative slope.

E) non-existent because the two variables are not related.

 

 

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