Useful tips for everyday
How do you find the accuracy of a class? To calculate accuracy, use the following formula: (TP+TN)/(TP+TN+FP+FN). Misclassification Rate: It tells you what fraction of…
How to compare one sample with a population counted number? Select options and hit the calculate button. Compare a single sample with the population Counted…
Are CDF unique? Note that even though there are more than one valid pdfs for any given random variable, the cdf is unique. There is…
What is the difference between population and sample space? The population is the set of all units a random process can pick. The sample space…
How do I know if my Shapiro is normal? value of the Shapiro-Wilk Test is greater than 0.05, the data is normal. If it is…
How to calculate the chain rule for conditional probability? A general statement of the chain rule for n events is as follows: Chain rule for…
What is the assumption of no autocorrelation in OLS? If this variance is not constant (i.e. dependent on X’s), then the linear regression model has…
How do you find the 95 confidence interval for a proportion? Because you want a 95 percent confidence interval, your z*-value is 1.96. The red…
What is overfitting bias and variance? High bias can cause an algorithm to miss the relevant relations between features and target outputs (underfitting). The variance…
How do you find precision at K? In the computation of precision@k, we are dividing by the number of items recommended in the top-k recommendation.…