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- https://stats.libretexts.org/Bookshelves/Applied_Statistics/Basic_Statistics_Using_R_for_Crime_Analysis_(Choi)/01%3A_Chapters/1.04%3A_Central_Tendency_and_VariabilityThe page explains the concepts of central tendency and variability, key statistical measures that summarize and describe datasets. Central tendency includes mean, median, and mode, while variability i...The page explains the concepts of central tendency and variability, key statistical measures that summarize and describe datasets. Central tendency includes mean, median, and mode, while variability includes variance and standard deviation. The page also provides a guide on using R to compute these measures using the Gapminder dataset, showcasing steps to load and manipulate the data, and calculate these statistics.
- https://stats.libretexts.org/Workbench/PSYC_2200%3A_Elementary_Statistics_for_Behavioral_and_Social_Science_(Oja)_WITHOUT_UNITS/03%3A_Descriptive_Statistics/3.05%3A_Introduction_to_Measures_of_VariabilityNow, measures of how different each score is from the center.
- https://stats.libretexts.org/Workbench/PSYC_2200%3A_Elementary_Statistics_for_Behavioral_and_Social_Science_(Oja)_WITHOUT_UNITS/03%3A_Descriptive_Statistics/3.08%3A_Interpreting_Standard_DeviationsBut what can standard deviations show us about a distribution of data?
- https://stats.libretexts.org/Workbench/PSYC_2200%3A_Elementary_Statistics_for_Behavioral_and_Social_Science_(Oja)_WITHOUT_UNITS/03%3A_Descriptive_Statistics/3.06%3A_Introduction_to_Standard_Deviations_and_CalculationsWhat's the standard measure of variability? Standard deviations, of course!
- https://stats.libretexts.org/Courses/Taft_College/PSYC_2200%3A_Elementary_Statistics_for_Behavioral_and_Social_Sciences_(Oja)/01%3A_Description/03%3A_Descriptive_Statistics/3.08%3A_Interpreting_Standard_DeviationsBut what can standard deviations show us about a distribution of data?
- https://stats.libretexts.org/Courses/Taft_College/PSYC_2200%3A_Elementary_Statistics_for_Behavioral_and_Social_Sciences_(Oja)/01%3A_Description/03%3A_Descriptive_Statistics/3.06%3A_Introduction_to_Standard_Deviations_and_CalculationsWhat's the standard measure of variability? Standard deviations, of course!
- https://stats.libretexts.org/Courses/Taft_College/PSYC_2200%3A_Elementary_Statistics_for_Behavioral_and_Social_Sciences_(Oja)/01%3A_Description/03%3A_Descriptive_Statistics/3.05%3A_Introduction_to_Measures_of_VariabilityNow, measures of how different each score is from the center.
- https://stats.libretexts.org/Courses/Rio_Hondo_College/PSY_190%3A_Statistics_for_the_Behavioral_Sciences/03%3A_Measures_of_Central_Tendency_and_Spread/3.03%3A_Spread_and_VariabilityThe interquartile range (IQR) is the range of the middle 50% of the scores in a distribution and is sometimes used to communicate where the bulk of the data in the distribution are located. This is a ...The interquartile range (IQR) is the range of the middle 50% of the scores in a distribution and is sometimes used to communicate where the bulk of the data in the distribution are located. This is a useful and interpretable statistic because taking the square root of the variance (recalling that variance is the average squared difference) puts the standard deviation back into the original units of the measure we used.
- https://stats.libretexts.org/Bookshelves/Applied_Statistics/An_Introduction_to_Psychological_Statistics_(Foster_et_al.)/03%3A_Measures_of_Central_Tendency_and_Spread/3.03%3A_Spread_and_VariabilityThe interquartile range (IQR) is the range of the middle 50% of the scores in a distribution and is sometimes used to communicate where the bulk of the data in the distribution are located. This is a ...The interquartile range (IQR) is the range of the middle 50% of the scores in a distribution and is sometimes used to communicate where the bulk of the data in the distribution are located. This is a useful and interpretable statistic because taking the square root of the variance (recalling that variance is the average squared difference) puts the standard deviation back into the original units of the measure we used.
- https://stats.libretexts.org/Courses/Sacramento_City_Colllege/PSYC_330%3A_Statistics_for_the_Behavioral_Sciences_with_Dr._DeSouza/03%3A_Measures_of_Central_Tendency_and_Spread/3.03%3A_Spread_and_VariabilityThe interquartile range (IQR) is the range of the middle 50% of the scores in a distribution and is sometimes used to communicate where the bulk of the data in the distribution are located.
- https://stats.libretexts.org/Bookshelves/Applied_Statistics/Business_Statistics_(OpenStax)/11%3A_The_Chi-Square_Distribution/11.02%3A_Test_of_a_Single_VarianceThis page emphasizes the importance of understanding both the mean and variability in populations, especially in production and assessments. It covers hypothesis testing for population variance, detai...This page emphasizes the importance of understanding both the mean and variability in populations, especially in production and assessments. It covers hypothesis testing for population variance, detailing null and alternative hypotheses, test statistics, and examples of variance testing in various contexts like education and service quality.