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PSYC 274 FINAL EXAM QUESTIONS AND ANSWERS
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PSYC 274 FINAL EXAM QUESTIONS AND ANSWERS
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PSYC 274 FINAL EXAM QUESTIONS AND ANSWERSA psychologist unobtrusively observes children in a preschool to study the children's
interaction with each other. The research method used by this psychologist is called
Naturalistic observation
A psychologist studied previously recoded crime reports and city census values to
determine if the amount of crime is related to population density. The research method
used. By this psychologist is called
Archival records research
A psychologist manipulates the type of instructions participants are given when a
performing a task. One group of participants is told their performance on a task is
affected only by chance, where as a second group of participants is told their
performance on a task is affected only by chance, whereas a second group of
participants is told their performance on the task relates to their ability levels. The
research method used by this psychologist is called
Experimentation
An ____ specifies the precise procedures used to manipulate an independent variable
or to measure a dependent variable
Operational definition
If you classify individuals by assigning the value 1 to males and the value 2 to females,
you are using _____ measurement
Nominal
Arranging a group of people from shortest to tallest in height is an example of ______
measurement
Ordinal
The Fahrenheit and Centigrade temperature scales are examples of: ______
measurement scales
Interval
Variable A is measured on an interval scale with values that range from 0 to 10. Which
of the following statements must be true?
The difference in the amount of A from 2 to 3 is the same as the difference from 6 to 7
Time, length, and weight are variables that typically are measured by _____ scales
Ratio
, Which of the following is the correct order for identifying the four types of measurement
scales from least to most information about individuals' differences?
Nominal-ordinal-interval-ratio
A variable that can assume an infinite set of values between any two levels of the
variable is a _____ variable
Continuous
What are the lower and upper real limits of a score from 5 on a 7-point rating scale?
4.5 and 5.5
A table showing each score in a set of scores and the number of times it occurred is
called a
Frequency distribution
In a(n) ______ frequency distribution, scores are placed into ______
Grouped; class intervals
If 4.25 is the result when dividing a distribution's "largest score minus its smallest score"
by the "number of intended class intervals," then the size of the class interval should be
_____
4.254 to 4.255
For the class interval of 10-15, the lower stated limit ______; whereas the lower real
limit is ______
10.0; 9.5
The frequency of a class interval plus the all the summed frequencies of all lower class
intervals is the ____ grouped frequency of a distribution
Cumulative
The height of a vertical bar is used to represent the frequency of occurrence of scores in
a
Histogram
31-44 missing
The addition of an extreme value to a set of scores _____
Increases the variance
If all the scores in a distribution are the same value, then the estimated population
variance of the scores will be _______
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