Now compute Residuals, which is Y - Y_hat residuals = [Y[i] - y_hat[i] for i in range(len(Y))] We need to find H matrix which is where X is the matrix of our independent variables. To find leverage, we have to take the diagonal elements of H matrix, in the following wa...
In thefield of statistics, data are vital. Data are the information that you collect to learn, draw conclusions, and test hypotheses. After all,statisticsis the science of learning from data. However, there are different types of variables, and they record various kinds of information. Crucially...
The mean is one of three ways to measure central tendency in statistics. The mean refers to the numerical average of a set of numbers. Two other measures of central tendency are the median, which refers to the number that is in the middle of an ordered set of numbers, and the mode, w...
Calculate the degrees of freedom by totaling the number of observations for both groups and dividing by 2. Determine your alpha level and look up the intersection of degrees of freedom and alpha in a statistics table. If the value is less than or equal to your calculated t-score, the resul...
The T test was developed by William Sealy Gosset in 1908 as a way to tell if the difference between two sets of information was statistically significant. It is used to determine if the change in two sets of data, which may be in a graph or table form, i
I'm teaching statistics using Excel. I want to compute some descriptive statistic, for instance, the first quartile. The following data shows sex (male of female) and age (in years) of the members of a population. It is stored in a excel table called "mydata". I want to ...
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Step 3:Use the expected count formula to calculate the expected count of each cell in the contingency table. Now, the expected count formula can be applied to each cell in the contingency table. To find the expected count of males who were planning to study, compute the...
*Advice: Don't compute the power to detect the difference actually observed,https://www.graphpad.com/guides/prism/latest/statistics/stat_why_it_isnt_helpful_to_compute.htm *Observed power, and what to do if your editor asks for post-hoc power analyses,https://daniellakens.blogspot.com/2014...
How do you compute the mode for a given set of numbers? Measures of Central Tendency In mathematics and statistics, we explain the measures of central tendency as a single value that approximates the central value in a data set. For example, the mode, median, and mean are measures of ce...