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Terms in this set (10)Arithmetic Mean Computed by adding all values of the variable in the data set and dividing by the # of observations. Known as the Mean. Value such that a histogram of the data is perfectly balanced, with equal weight on each side of the mean Population Arithmetic Mean (pronounced mew) Computed using all the individuals in a population. Known as a Parameter. Sample Arithmetic Mean (pronounced x-bar) Computed using sample data. Known as a statistic. Greek and Roman Symbols N= population size Median Value that lies in the middle of the data when arranged in ascending order Mode The most frequent observation of the variable in a data set. If there is only 1 instance of each variable, there is no Mode. Measures of Central Tendency 1) Mean (uses all the data; 2)Median (relies only on the
position of the data; When is a statistic Resistant? If extreme values (very large or small) relative to the data do not affect its value substantially. Relation between Mean, Median, and Distribution Shape Skewed right - Mean substantially larger than Median. NOTE: Guidelines that work well for continuous data, but when using discrete data, they may not apply in all cases. Measure of Central Tendency for data that are Nominal Only the Mode can be computed, not Mean or Median. Sets with similar terms3.1 Measures of Central Tendency21 terms sunsetdawn Statistics - 3.1 Measures of Central Tendency13 terms Marie_Thomas534PLUS Statistics 120: 3.121 terms Justyme Section 3.211 terms fyrd Sets found in the same folder3.2 Measures of Dispersion11 terms frd99 3.4 Measures of Position and Outliers9 terms frd99 Chapter 3 Summary2 terms frd99 Other sets by this creator7.3 Assessing Normality4 terms frd99 5.3 Independence and the Multiplication Rule5 terms frd99 4.3 Diagnostics on the Least-Squares Regression Li…9 terms frd99 4.2 Least-Squares Regression9 terms frd99 Recommended textbook solutions
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Which of the following measures of central tendency is not affected by extreme values in the sample data set?Median is the middle most value of a given series that represents the whole class of the series.So since it is a positional average, it is calculated by observation of a series and not through the extreme values of the series which. Therefore, median is not affected by the extreme values of a series.
Which of these measures of central tendency is not affected by extreme or deviant value?Properties of Median
Median is the score or class in the distribution wherein 50% of the score fall below it and another 50% lie. 2. Median is not affected by extreme or deviant values.
Which measure of central tendency should be avoided when extreme values affect the data?Answer. When there are extreme numbers in the data set (very low or very high numbers), the median is a good choice for a measure of central tendency. The extreme numbers have less effect (or no effect at all) on the median.
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