Worksheets1F: MIDTERM REFRESHER IN PSYCHOLOGICAL STATISTICS
Total questions: 20
Worksheet time: 10mins
A scale that measures a variable with an absolute zero value, magnitude and equal intervals is ____.
Nominal
Ordinal
Interval
Ratio
Which of the following is the correct sequence in solving for mathematical operations?
Parenthesis -> Squaring -> Multiplication or Division (from left to right) -> Summation -> Addition or Subtraction
Parenthesis -> Summation -> Multiplication or Division (from left to right) -> Squaring -> Addition or Subtraction
Parenthesis -> Squaring -> Addition or Subtraction -> Summation -> Multiplication or Division (from left to right)
Parenthesis -> Summation -> Squaring -> Multiplication or Division (from left to right) -> Addition or Subtraction
A set of eight scores consists of values 7, 9, 10, 11, 12, 13, 15 and 4. Identify and compute for: (Σχ)2
5, 661
6, 561
8, 281
7, 056
A set of eight scores consists of values 10, 15, 20, 25 and 30. Identify and compute for: (X-2)
88
88
98
90
Refers to a set of individuals selected from a population, usually intended to represent the population in a research study.
Inferences
Generalizations
Sample
Number of Scores
A characteristic or condition that changes or has different values for different individuals. Specific characteristics of individuals (height, weight, gender, personality, etc.) or outside factors/ environmental conditions that change (temperature, time of the day, size of the room in which an experiment is conducted) that may influence them.
Data
Sample
Treatment Conditions
Variables
A naturally occurring discrepancy, or error, that exists between a sample statistic and the corresponding population parameter.
Inferential error
Descriptive error
Significant error
Sampling error
Statistical techniques that summarize, organize, and simplify data are classified as ____
population statistics
sample statistics
descriptive statistics
inferential statistics
Manipulation, control and random assignment of subjects in treatment conditions are all true about ____.
Experimental method
Nonexperimental method
Correlational method
All choices are possible answer
Cumulative frequency refers to:
The portion of individuals who got a score in relation to the total number of scores.
The percent of individuals who attained a score.
The accumulation of individuals as you move up the scale.
The number of times a score occurred.
The median is more subject to sampling variability than the mean. However, it is less subject to sampling variability than the mode.
The first statement is true. The second statement is true.
The first statement is true. The second statement is false.
The first statement is false. The second statement is true.
The first statement is false. The second statement is false.
A marketing researcher asked consumers to select their favorite from a set of four designs for a new product logo. What measure of central tendency would provide the best description of the average score?
Mean
Median
Mode
Range
Following this formula will give you the ___.
Variance
Z score
Cumulative percentage
Normal curve
Which among the following statements is not true about the areas under the normal curve?
Approximately 34% of all scores occur below between the mean and 1 standard deviation above the mean
Approximately 34% of all scores occur below between the mean and 1 standard deviation below the mean
Approximately 68% of all scores occur between the mean and ±1 standard deviation
Approximately 98% of all scores occur between the mean and ±2 standard deviation
Standard scores are more easily interpretable than raw scores. With a standard score, the position of a score relative to other scores is readily apparent.
The first statement is true. The second statement is true.
The first statement is true. The second statement is false.
The first statement is false. The second statement is true.
The first statement is false. The second statement is false.
X- µ will give you value of ___.
Variance
Sum of squares
Deviation score for population data
Deviation score for sample data
This formula will give you the ____.
Variance
Deviation score
Standard deviation
Sum of squares
Occurs when a researcher fails to reject a null hypothesis that is really false.
True Positive
False Positive
True Negative
False Negative
Occurs when a researcher rejects a null hypothesis that is actually true.
True Positive
False Positive
True Negative
False Negative
Whenever the sample data are in the critical region, the appropriate decision for a hypothesis test is to reject the null hypothesis.
True
False
