In a survey of persons on a beach, respondents gave the SPF factor of the sunscr

Question

In a survey of persons on a beach, respondents gave the SPF factor of the sunscreen they use and whether or not they wore a wide-brimmed hat while in the sun. The researchers were interested in whether or not the SPF factor and hat use were related. For each of the following, (1) classify as CQ, C->C, QC, or QQ, and (2) explain whether or not such a claim can be made. a. The use of a hat is the explanatory variable. b. The SPF factor of the sunscreen is the explanatory variable. The coffee house in Story Library is collecting data to determine if the members of the CBC student population are aware of the menu offerings. An electronic survey is prepared and posted on the Story Library website. Classify this type of survey method and list any bias that may be present.

Explanation / Answer

1)

SPF factor is a quantitative variable q, whether or not wearing a wide-brimmed hat is a categorical variable.

a) The use of hat is an explanatory variable and hence SPF factor becomes a response variable

So the relationship is c->q

b)The SPF factor of the sunscreen is the explanatory variable and the use of hat is a response variable.

So the relationship is q->c.

Such claims cannot be made since the SPF factor and the use of hat are not dependent on each other

2) This type of survey may be calssified as online survey or a web-based survey.

The biases that may be present in this type of survey method are

Non responsive bias

Responsive bias

Participation bias

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