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- A statistic that, on average, consistently tends to overestimate (or underestimate) the corresponding population parameter.
open.maricopa.edu/psy230mm/chapter/glossary-key-terms/Glossary – Key Terms – Introduction to Statistics for Psychology
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Probability is the underlying concept of inferential statistics and forms a direct link between samples and the population that they come from. In this chapter we will focus only on the principles and ideas necessary to lay the groundwork for future inferential statistics.
- Chapter 12
Introduction to Statistics for Psychology. 12 Chapter 12:...
- Measures of Dispersion
The mathematical definition of the variance is the sum of...
- Glossary
odds ratio: how likely will an event/outcome occur: law of...
- Linear Regression
The term “best fit” means that the line is as close to all...
- Chapter 12
Explore Statistics. The field of statistics is concerned with collecting, analyzing, interpreting, and presenting data. Learn statistics and probability for free, in simple and easy steps starting from basic to advanced concepts.
- A p-value less than 0.05 (typically ≤ 0.05) is statistically significant. It indicates strong evidence against the null hypothesis, as there is les...
- A z-score describes the position of a raw score in terms of its distance from the mean when measured in standard deviation units. It is also known...
- The independent variable is the variable the experimenter manipulates or changes and is assumed to have a direct effect on the dependent variable....
- Quantitative data is numerical information about quantities and qualitative data is descriptive and regards phenomena that can be observed but not...
Probability refers to the likelihood of an event occurring. It can be expressed as a number (0.5) or a percentage (50%). Statistical tests allow psychologists to work out the probability that their results could have occurred by chance, and in general psychologists use a probability level of 0.05.
odds ratio: how likely will an event/outcome occur: law of large numbers: as a sample size grows, its mean gets closer to the average of the whole population: Central Limit Theorem
Jul 1, 2013 · Psychologists recognize it as a fundamental and important class because its purpose is to help students begin to think as empirical psychologists. In this chapter, we approach the discussion of the statistics course as one involving critical thinking about ideas rather than simply number crunching.
Feb 10, 2022 · This entry starts by defining probability, followed by a review of the historical context of probabilistic thinking. It continues with a brief commentary on experimental classical research on probabilistic thinking, heuristics, and biases research program.
The ratio of the number of equally likely outcomes in an event E E to the number of equally likely outcomes not in the event E ′ E ′ is called the odds for (or odds in favor of) the event. The opposite ratio (the number of outcomes not in the event to the number in the event E ′ E ′ to the number in the event E E is called the odds ...
