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1
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84892332908
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It is important when dealing with numbers to identify the measurement units. Age is measured in years
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It is important when dealing with numbers to identify the measurement units. Age is measured in years.
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2
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84892283542
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One is subtracted as a corrective measure. Statisticians have found that the variance is underestimated for small samples if we just divide by n
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One is subtracted as a corrective measure. Statisticians have found that the variance is underestimated for small samples if we just divide by n.
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3
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84892283859
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As all inferential (i.e. predictive) techniques assume that you have a random sample, you should not violate that assumption by removing projects just because they do not fit your model!
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As all inferential (i.e. predictive) techniques assume that you have a random sample, you should not violate that assumption by removing projects just because they do not fit your model!.
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4
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84892305572
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To simplify this complicated discussion, the effort in my example is normally distributed. In practice, this is not the case
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To simplify this complicated discussion, the effort in my example is normally distributed. In practice, this is not the case.
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5
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84892205589
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In addition, it has also been shown that if a variable is normally distributed in the population, the sampling distribution of the sample mean is exactly normal no matter what the size of the sample
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In addition, it has also been shown that if a variable is normally distributed in the population, the sampling distribution of the sample mean is exactly normal no matter what the size of the sample.
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6
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84892191207
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Telon is a tool that generates code
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Telon is a tool that generates code.
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7
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84892261407
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Obviously, a fraction of a project does not exist; however, it is necessary to keep the decimal places for the calculations
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Obviously, a fraction of a project does not exist; however, it is necessary to keep the decimal places for the calculations.
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8
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84892357869
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I also prefer Spearman's rank correlation coefficient for quasi-interval variables
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I also prefer Spearman's rank correlation coefficient for quasi-interval variables.
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9
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84892224757
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The statistical term "variance" is defined as the sum of squared deviations divided by the number of observations minus one. It is a measure of the average variation of the data. Here I am referring to the total variation of the data (i.e. we don't divide by the number of observations)
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The statistical term "variance" is defined as the sum of squared deviations divided by the number of observations minus one. It is a measure of the average variation of the data. Here I am referring to the total variation of the data (i.e. we don't divide by the number of observations).
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10
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84892195106
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In practice, a software manager would probably not consider a 9% difference in percentage of JCL use to be that important, even if it was significant
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In practice, a software manager would probably not consider a 9% difference in percentage of JCL use to be that important, even if it was significant.
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11
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84892259752
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Had we been able to reject the null hypothesis in this example, it might not have been because of the differences in the population means, but because of the differences in their variances. When the sample variances for the different groups are very different, as they are in this example, then reject with caution. The ANOVA approach assumes that the population variances are similar
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Had we been able to reject the null hypothesis in this example, it might not have been because of the differences in the population means, but because of the differences in their variances. When the sample variances for the different groups are very different, as they are in this example, then reject with caution. The ANOVA approach assumes that the population variances are similar.
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12
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84892223295
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Parametric statistics are only suitable for data measured on interval and ratio scales, where parameters such as the mean of the distribution can be defined
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Parametric statistics are only suitable for data measured on interval and ratio scales, where parameters such as the mean of the distribution can be defined.
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