18 Questions
Which type of scale has an absolute zero point?
Ratio
What characteristic do interval and ratio scales share?
Equal intervals
How are most psychological variables like intelligence typically treated in practice?
Interval data
Which type of scale is considered to contain no absolute zero point?
Interval
In a histogram, what does the height of each bar represent?
Frequency of the value
What is the purpose of a frequency polygon in statistics?
To depict frequency distributions for continuous data
What type of scale involves classification or categorization based on one or more distinguishing characteristics?
Nominal scale
What type of distribution has two or more high frequencies separated by a lower frequency?
Rectangular distribution
Which level of measurement involves rank classification like clothing sizes (S, M, L, XL) and likert scales?
Ordinal
In a positively skewed distribution, where is the peak (highest frequency) located?
Left-hand side
What term describes a distribution where the pattern of frequencies on the left and right side are mirror images of each other?
Symmetrical distribution
In the context of statistics, what does a variable represent?
A condition that changes for different individuals
What is the main purpose of assigning numbers or symbols to characteristics according to rules?
To measure variability
Which statistic describes the amount of variation in a distribution?
Standard deviation
Which type of scale places items into mutually exclusive and exhaustive categories?
Nominal scale
What does leptokurtic distribution indicate about the score's concentration?
Concentrated towards the mean
What is the characteristic of an ordinal scale that distinguishes it from other measurement levels?
Ordered or ranked categories
Which type of distribution has an extremely large deviation from the mean?
Platykurtic distribution
Learn about key concepts in statistics including population, parameter, sample, and variable. Understand the difference between statistics and parameters.
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