Exam 3: A Statistics Refresher

What is the primary advantage of normalization of a skewed distribution?

Which statement is TRUE regarding this distribution of scores: 0,11,10,0,0,5,4,3,2,1,1,1?

The coefficient of determination is calculated by

A key advantage of meta-analysis over simply reporting a range of findings is that

The amount of time that passes between the presentation of a word on a computer screen and the reading of a word by a testtaker involves measurement on which type of scale?

Which of the following statements is TRUE concerning a correlation coefficient?

An instructor rank-orders students in her measurement class based on their performance on a quiz of Chapter 3 in the textbook.In this instance,the instructor is using which type of scale?

Skewness provides an indication of the extent to which the shape of the distribution is

In a normal distribution of scores,approximately what percentage of test scores falls between +1 and -1 standard deviations from the mean?

The fact that a test score has a normal distribution

Kurtosis refers to this characteristic of a graphed distribution.The characteristic is

Mode is to nominal statistic as median is to:

Which statement is TRUE concerning a coefficient of correlation?

Today,when someone tells you what their recently measured "IQ" is,the value quoted is most likely

Which is NOT a part of the formula for calculating a standard deviation?

Among school-age children,as age increases,so do reading skills.This relationship between two variables illustrates

Frequency distributions may be illustrated in a variety of ways.Which of the following illustrations is the MOST popular of illustrating a frequency distribution?

When test scores are found to be normally distributed,they take on the shape of the familiar "bell curve." In these kinds of graphs,which variable is on the y (vertical)axis?

In a normal curve,approximately 68% of all scores fall

The tail portion of a normal curve is the area of the curve between