Research and Evaluation

Type I and Type II errors are called ____ and ____ respectively

An experiment is said to be confounded when

SD is 15, mean is 100. someone with a 122 would fall within

The most useful measure of central tendency is the

Mode is

Experimental is to cause and effect as correlational is to

A type I error occurs when

Hypothesis testing is most closely related to the work of

If a researcher utilized two IVs then the statistic of choice would be the

the mean is merely the sum of the scores divided by the number of scores. The mean is misleading when

y axis is used to plot the frequency of DVs. It can also be called the _____

An operational definition

A researcher gives a depressed patient a sugar pill and the individual's depression begins to lift. This is known as

In experimental terminology IV stands for ____ and DV stands for ___________

students who study a lot get high scores on exams, then the correlation between study time and exam score is

A doctoral student who begins working on his bibliography for his thesis would most likely utilize

A distribution with class intervals can be graphically displayed via a bar graph also called a

rating scale with strongly agree, somewhat agree, neutral, somewhat disagree, or strongly disagree is:

The standard deviation is the square root of the variance. A z-score of +1 would be the same as

A ratio scale is an interval scale with a true zero point. In terms of counseling research:

Switching the order in which stimuli are presented to a subject in a study is known as

X axis is used to plot the IV scores. it can also be called the ______

Researchers often utilize naturalistic observation; in this approach

Experiments emphasize parsimony, which means

Z-scores are the same as standard deviations, thus a z-score of -2.5 means

Regardless of the shape, the ____ will always be the high point when a distribution is displayed graphically.

If a distribution is bimodal, then there is a good chance that

clients don't know if they're in the control or experiment group; researcher DOES know. This is a

Experimenters should always abide by a code of ethics. The variable you manipulate/control in an experiment is the

A study that would best rule out chance factors would have a significance level of P = ____

P = .05 could also mean

Neither the clients nor the researchers knew which students received the new treatment.

a bimodal distribution has two modes. Graphically, this looks like

Dr. X wants to ferret out the effects of more than one IV. She will use a _______ design

P = .05 really means that

Test scores on an exam that fell below 3 SD of the mean or above 3 SD of the mean could be described as

If a researcher changes the significance level from .05 to .001, then

A type II error

Occam's Razor suggests that experimenters

If an experiment can be replicated by others with almost identical findings, then the experiment is

If an ANOVA yields a significant F value, you could rely on _______ to test significant differences between group means.

Which of the following illustrates the function of the nominal scale?

The ordinal scale rank orders variables. An example of this would be

Researcher decides to increase the sample size in the experiment, this will

Which of the following would most likely yield a perfect correlation of 1.00?

A researcher wants to run a true experiment but insists she will not use a random sample. You can safely say

The median is

An IQ score on an IQ test which has 3 SDs above the mean would be

A platykurtic distribution would look approximately like

In the social sciences, the accepted probability level is usually

Sociogram is to a counseling group as a scattergram is to _____.

Standardized tests always have

Statistically, in order to compare a control group to the experimental group, the researcher will need a _______

A good guess would be that if you correlate the length of graduates' baby toes with their NCE scores the result would

The most valuable type of research is

In a basic curve or so-called frequency polygon the point of maximum concentration is the

Nondirective is to person-centered as

Results show that the IV did effect the DV but in reality, this is not the case. The researcher made a

When a horizontal line is drawn under a frequency distribution it is known as

When a distribution of scores is not distributed normally statisticians call it

When you see the letter P in relation to a test of significance it means

If all students score very low, the distribution of their scores would

The interval scale has numbers scaled at equal distances but has no absolute zero point. An example would be

The simplest form of descriptive research is the __, which requires a questionnaire return rate of __ to be accurate.

Mike takes a math achievement test. In order to predict his score if he takes the test again the counselor must know