Questions and Answers
What type of reasoning is illustrated by the following statement: All boys have hair. Johnny is a boy. Therefore, Johnny has hair?
A sample is just a subset of a population that you are interested in studying.
True
What is the probability of drawing an Ace of Hearts from a standard deck of 52 cards?
1/52
If you take your vitamins every day, you will never get sick. This is a type of ________ statement.
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Nominal variables are everything like ordinal variables except that they are ordered.
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What is a distribution that is unimodal, asymptotic, and symmetrical called?
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A positively skewed distribution is one in which:
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What is the correct graphical way of displaying frequencies of nominal data?
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What does the height of the bars on a histogram represent?
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The only measure of central tendency that can be used to describe nominal data is:
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The median describes which point in the distribution?
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The median can be used to describe interval/ratio and ordinal data.
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In which type of distribution are the mean, median, and mode exactly the same as each other?
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Of the median and mode, which is a more precise measure of central tendency?
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Study Notes
Deductive Reasoning
- Deductive reasoning involves deriving specific conclusions from general principles.
- Example: If all boys have hair and Johnny is a boy, then Johnny has hair.
Sample Definition
- A sample is a subset of a population that researchers are interested in studying.
Probability Calculation
- The probability of drawing an Ace of Hearts from a standard deck of 52 cards is 1/52.
Inductive Reasoning
- Inductive reasoning involves making generalizations based on specific observations.
- Example: Taking vitamins daily and asserting it will prevent sickness.
Nominal Variables
- Nominal variables are categorized without a specific order.
- It is false to say nominal variables are just like ordinal variables but ordered.
Normal Distribution Characteristics
- A normal distribution is defined as unimodal, asymptotic, and symmetrical in shape.
Positively Skewed Distribution
- A positively skewed distribution features a longer tail on the right-hand side compared to the left.
Class Interval Rules
- Class intervals must have equal width, be non-overlapping, and consecutive.
- Not required: intervals must consider the frequency of values in the dataset.
Bar Graph Usage
- Bar graphs are the appropriate method for displaying frequencies of nominal data.
Histogram Representation
- In a histogram, the height of the bars shows the frequency of each value in the dataset.
Mode as Measure of Central Tendency
- The mode is the sole measure of central tendency applicable to nominal data.
Median Definition
- The median indicates the mid-point of a distribution, separated into two equal halves.
Median in Data Types
- The median can summarize both interval/ratio data and ordinal data.
Unimodal Symmetrical Distribution
- In a unimodal symmetrical distribution, the mean, median, and mode values are equivalent.
Precision of Measures
- Between the median and mode, the median is considered a more precise measure of central tendency.
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Description
Test your knowledge on fundamental concepts in Statistics Psychology with these flashcards from Unit 1. Covering topics like reasoning and probability, this quiz will help reinforce your understanding of statistical principles. Review and strengthen your grasp on these essential ideas in psychology and research methods.
