A recent study demonstrated that oxytocin appears to increase people’s tendency to trust others (Kosfeld, Heinrichs, Zak, Fischbacher, and Fehr, 2005). The study demonstrated that people who inhaled oxytocin were more likely to give their money to a trustee compared to people who inhaled an inactive placebo. For this experimental study, identify the independent variable. 2. Explain the difference between a discrete variable and a continuous variable.   3. For the following scores, what is the value of (ΣX)2   x 6 1 3 4 2

1. A recent study demonstrated that oxytocin appears to increase people’s tendency to trust others (Kosfeld, Heinrichs, Zak, Fischbacher, and Fehr, 2005). The study demonstrated that people who inhaled oxytocin were more likely to give their money to a trustee compared to people who inhaled an inactive placebo. For this experimental study, identify the independent variable.

2. Explain the difference between a discrete variable and a continuous variable.

3.

For the following scores, what is the value of (ΣX)2