Two Studies Were Carried Out to Determine If Children in Daycare

question 67

Multiple Choice

Two studies were carried out to determine if children in daycare got more ear infections than children who stayed at home.The first study compared ear infection rates in 50 Canadian girls ages 1 to 2,half of whom attended daycare and half of whom stayed home.The second study compared ear infection rates in 1000 Swedish boys ages 3 to 4,half of whom attended daycare and half of whom stayed home.The results of these two studies differed greatly.
Which of the following is LEAST likely to be the cause of such differences?

• A) different genders
• B) different mothers
• C) different ages
• D) different sample sizes
• E) different countries

Understand the purpose and interpretation of scatterplots.

Recognize the difference between correlation and causation.

Interpret negative and positive correlation coefficients and their implications for variables' relationships.

Analyze the reasons behind the rarity of perfect correlations and the implications of correlation coefficients on variable relationships.

---

Definitions:

Social Environment

The surrounding physical and social environment where people dwell or where specific happenings or growth takes place.

Anticipated Regret

The expectation of feeling regret in the future for actions taken or not taken in the present, which can influence decision-making processes.

Decision Avoidance

The act of choosing not to make a decision or taking steps to avoid making a choice.

Certainty Bias

The tendency for individuals to favor information or options that appear more certain or less ambiguous.