Front

Ms. Walker wants to describe the average score on your first psychology test. Which measure of central tendency is she most likely to use?

Back

mean

Front

Mrs. Baumann gives an exam where most of the students receive failing grades and only a few students receive high scores. When the exam scores are plotted, the distribution will be

Back

positively skewed

Front

In a strongly skewed distribution, the best indicator of central tendency is usually the

Back

median

Front

The standard deviation

Back

indicates the average difference between each score in a group and the mean for that group of scores

Front

If Andy has an IQ of 130. If the mean for IQ is 100 with a standard deviation of 15, what percentage of the population has an IQ greater than Andy's, assuming the population falls on a normal distribution?

Back

2.5 percent

Front

A study is said to have _______________ if it yields consistent results each time it is repeated.

Back

reliability

Front

Factors that cause differences between the experimental group and control group other than the independent variable are _____________________.

Back

confounding variables

Front

The factor the researcher manipulates in a controlled experiment is the _________________.

Back

independent variable

Front

The subgroup of the population that participates in the study is referred to as the _________.

Back

sample

Front

When a researcher's expectations or preferences about the outcome of a study influence the results, ____________ bias has occurred.

Back

experimenter