Question

08.04A)The scatter plot below shows the test scores of a group of students who played games online for different amounts of time in a day:




What will most likely be the effect on the test score of a student if the number of hours he/she plays games online increases?

Test score will decrease because the graph shows negative association

Test score will increase because the graph shows positive association

Test score will increase because the graph shows negative association

Test score will decrease because the graph shows positive association




4 graphs are shown:

Which graph represents a positive nonlinear association between x and y?

Graph A

Graph B

Graph C

Graph D

Answer 1

Part 1 : The scatter plot below shows the test scores of a group of students who played games online for different amounts of time in a day:What will most likely be the effect on the test score of a student if the number of hours he/she plays games online increases?

Test score will decrease because the graph shows negative association

Test score will increase because the graph shows positive association

Test score will increase because the graph shows negative association

Test score will decrease because the graph shows positive association 

The correct answer is : Test score will decrease because the graph shows negative association. 

Fact : Playing video games is a distraction and  many kids fail there grade. Therefore test scores will decrease. 

Part 2 : Non Linear: This can be defined as if all the points on the scatter diagram tends to lie near a smooth curve, the correlation is said to be non linear. 

Answer = Diagram C

Answer 2

Answer:

1)

Test score will decrease because the graph shows negative association.

2)

Graph A

Step-by-step explanation:

1)

Clearly from the graph we could observe from the scatter plot that:

Test score will decrease because the graph shows negative association.

( As the points or the test scores are decreasing with the increasing number of hours spent on playing games online)

2)

Positive Nonlinear association:

A positive Non-linear relationship between two variables can be shown with an upward-sloping curve in a graph.

Hence, Graph A represents the following relationship.

( Since graph B and D are linear and graph C is negative association since the value keeps on decreasing)