Ungrouped data standard deviation

    • [DOC File]Page

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      For the ungrouped data, what fraction of the scores have a (absolute value of z score) larger than 1 ? Using the box plot of the ungrouped data, eliminate all “outliers”, i.e., all data beyond the outer fence (3.0 IQR's from the box hinges). Now recompute the mean and the sample standard deviation of this reduced data set.

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    • [DOC File]BrainMass

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      13. If there is an odd number of observations in a set of ungrouped data, the median is located at: a. n. b. n/3. c. (n+1)/2. d. none of the above. 14. According to Empirical Rule, what percent of the observations lie within plus and minus 1 standard deviations of the mean? a. About 99 percent. b. About 95 percent. c. About 68 percent

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    • [DOCX File]Ungrouped Data

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      Ungrouped Data. Mean – the sum of data entries divided by the number of entries. Non-resistant measure of center ... Variance and Standard Deviation. Ungrouped Data. Variance – average squared difference of the scores from the mean. Because it’s squared, more weight given to extreme values.

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    • [DOC File]Data Screening Check List - California State University ...

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      Homoscedasticity – this is an assumption for analyses using ungrouped univariate data. Variables are said to be homoscedastic when “the variability in scores for one continuous variable is roughly the same at all values of another continuous variable”.

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    • [DOC File]Probability & Statistics

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      Mean Standard deviation Boys 48 12 Girls 53 10 (a) Calculate the mean and standard deviation of the combined group of 100 candidates. (b) One of the candidates was awarded 100 marks and another, 0 marks. If it were decided to ignore these two marks, calculate the mean and standard deviation of the remaining 98 candidates.

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    • [DOC File]UKURAN STATISTIK - Gunadarma

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      Ukuran Statistik nantinya akan mencakup data : 1. Ungrouped Data. 2. Grouped Data. Ungrouped Data : Data yang belum dikelompokkan. Grouped Data : Data yang telah dikelompokkan . Tabel Distribusi Frekuensi. Contoh Ungrouped Data : Data Nilai Statistika 10 orang mahasiswa FE-GD. 78 62 34 57 89. 67 55 75 73 56. Contoh Grouped Data

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    • [DOC File]2 - James Madison University College of Business

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      The standard deviation and variance is computed from grouped data using the same idea used here: treat every observation in a class as though it fell at the midpoint of that class. R. Comparison of measure of central tendency: mean, median, mode, midrange, midhinge

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    • [DOC File]Chapters 1 through 4 - The University of Tennessee at ...

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      Ungrouped Data SAMPLE POPULATION. Mean. where n = sample size where N = size of population. Interquartile Range. IQR = Q3 - Q1 (Same as for sample) where: Q3 = third quartile (i.e., 75th percentile) Q1 = first quartile (i.e., 25th percentile) Variance. or: or: Standard Deviation. Coefficient of Variation (C.V.) Covariance

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    • [DOCX File]CHAPTER 2 : DESCRIPTIVE STATISTICS

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      Compute, describe, compare and interpret the three measures of central tendency: mean, median, and mode for ungrouped and grouped data. Compute, describe, compare and interpret the two measures of dispersion: range, and standard deviation (variance) for ungrouped and grouped data.

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    • [DOC File]JustAnswer

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      Aug 04, 2010 · The mean is 0 and the standard deviation is 1. 26) Find the area under the standard normal distribution curve between z = 0 and z = -2.16. C. 0.4846 27) The number of standard deviations a particular X value is from the mean is commonly referred to as _____. B. z

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