Answer:
• The age of a kitten and its weight
,
• Temperature and the sales of ice cream
,
• The number of notebooks bought and the total cost.
Explanation:
Two variables have a positive association when an increase in the values of one of the variables also leads to an increase in the value of the second variable.
From the given options, those with a positive association are explained below:
(a)The age of a kitten and its weight
The older a kitten gets, the more the weight of the kitten until it gets to adulthood.
(b)Temperature and the sales of ice cream
When the temperature increases, people tend to purchase more ice cream.
(c)The number of notebooks bought and the total cost.
• If 1 notebook costs $5, then:
,
• 2 notebooks will cost $10.
As the number of notebooks bought increases, the total cost also increases.
