EXR-325

A predictive validity technique involving of a two-way grid of percentages of students at different levels of an aptitude test who achieved different grades is called

an expectancy table

Determining the relationship between students' attitudes toward drugs and the frequency of drug usage is a example of an

correlation study

A researcher wishes to study a group of children over a period of 10 years and beginning in 2016 and ending in 2025. This is an example of

longitudinal study

If a thermometer measured the temperature in an oven as 400 degrees five days in a row when the temperature was actually 337 degrees, this measuring instrument would be considered

reliable but not valid

Determinants of disease are often called

risk factors

According to the American Psychological Association, when a graduate student submits her thesis or dissertation for publication jointly with the major professor, the first author should be:

the student

Most conservative follow-up methods for ANOVA

Scheffe

The t-test is used to

Test whether two groups differ significantly.

Additional factors that can affect the relationship between physical activity and blood cholesterol, such as smoking, body fat, and so on, are called

confounding factors

A chi-square analysis compares the responses to a question on recreational preferences of males and females at the three grade levels. The resulting two-way classification structure is called a

contingency table

A teacher wishes to determine the reliability of three trials on a performance test. He uses ANOVA to obtain the reliability coefficient. This technique is called

intraclass correlation

To determine whether data are normally distributed, one can test to see whether the curve is shifted to the left or right. This shift is called

skewness

Select the false statement.

If a null hypothesis is false, but the researcher is able to reject it, a type two error has occured

The determining factor in the order of authorship of a research publication is that the first author is the person who

develops the idea and plans the research

When the purpose of the research is to determine the effects of one independent variable (e.g., four groups) on one dependent variable (e.g., self-concept), the best choice of a statistical analysis is

ANOVA

The use of intraclass correlation to estimate reliability in motor performance instead of Pearson r has the advantage(s) of

Allowing analysis of trial-to-trial change, estimating reliability for more than two trials ( a and b)

Which of the following statements about dual publication is not true?

Dual publication is permissible if the two journals are in different languages (e.g., published in different countries

A researcher sought to find out which exercises was more effective in building endurance. One group used exercise A, and another group used exercise B. at the end of the study the researcher should compare the two groups' scores by

an independent test

A researcher wants to determine the percentage of time that a teacher spends in various tasks, such as demonstration, explanation, and motoring students. Which of the following is probably the most valid way to research this?

an observational study

A type of study that matches individuals with and without disease on factors such as age and ethnicity is the

case-control study

A statistical technique that tests for significant differences between observed and expected frequencies of occurrence is

chi square

A study design uses, for example, two groups of people representing a disease-free population who are then classified as exercisers and nonexercisers. After a period of time, the mortality rates of each group are compared. This design is called a(n)

cohort study

Comparing tests items with the course objectives (course topics) checks which type of validity?

content

A researcher wishes to determine whether group made a significant improvement from the pretest (M=25) to the posttest (M=30). The correct statistical test to use to compare the two means is the

dependent t test

A basic characteristic of correlation research is that it

does not manipulate variables and hence cannon establish cause and effect

The case study

gathers data from a single person or from a limited number of similar people

A major limitation in the use of video-recording in observational is its

obtrusivenss

Prevalence of disease differs from incidence of disease in that prevalence refers to the number of

people who presently have a disease, whereas incidence relates to new cases

The term that denotes using ideas, writings, or drawings of other as your own is

plagiarism

The major weakness of epidemiology is

the inability to experimentally establish cause and effect

Use of one-tailed versus a two tailed test of significance of the difference between two sample means depends on

whether the difference is expected to be in one direction only

If ANOVA has found a significant difference among four treatment groups, a follow-up test such as the Scheffe is needed to determine

which of the groups differ significantly from the others