Exam 15: Measurement and Statistical Methods

A scale that is simply a set of categories for classifying objects is a(n) ________ scale.

A ratio scale ________ equal distances between the points and ________ a true zero.

In a set of survey results, the mean is 15 and the standard deviation is 3. With these numbers we know that 99% of the scores are between ________.

Probabilities are used to express the ________.

A scale that ranks preferences on a continuum from lowest to highest is a(n) ________ scale.

For the numbers 17, 2, 9, 12, 15, the range is ________.

A statistical measure of the degree to which two variables are associated is called a ________.

A significance level of .05 means that the odds that the results of an experiment are due to chance are ________.

If the dots on a scatter plot form a circle or random pattern, there is ________.

The difference between the highest and the lowest measurements is the ________.

The scale that provides the least information is a(n) ________ scale.

Traditionally, psychologists reviewing the literature in a particular area of research relied on the ________ method to reach conclusions.

A pattern of dots indicating scores on two different characteristics is called a ________.

About 95 percent of scores fall between ________ standard deviation(s) above and below the mean in a normal distribution.

We say that a curve is skewed to the left if the ________.

About ________ percent of scores fall between 3 standard deviations above and 3 standard deviations below the mean in a normal distribution.

A line graph showing a frequency distribution is called a ________.

A scale with equal distances between the points, or values, but without a true zero is called a(n) ________ scale.

Which of the following can be used to describe if two or more sets of measurements are in any way associated with each other?

The median for the set of scores 6, 9, 10, 11, 15, 15 is ________.