Which of the following correlation coefficients indicates the strongest relationship between two variables?

Charles Darwin proposed that emotions are a product of evolution and are therefore universal. Which observation supports the idea that emotions are based in biology rather than in learning?

According to the work of Paul Ekman and Wally Friesen, which emotion has a universal facial expression?

Desmond is a graduate student who does a lot of work with household income data, and his samples almost always have outliers. Which measure of central tendency might be the most useful for Desmond to use?

Calculate the range of the following dataset: 22, 28, 31, 25, 42, 30.

What does the third-variable problem refer to in correlational research?

Which of the following p values would indicate that a statistically significant relationship was found between two variables?

According to Abraham Maslow, peak experiences are

According to Abraham Maslow's hierarchy, one cannot meet cognitive needs until _____ needs are met.