STATISTICAL TECHNIQUES AND TOOLS
T DISTRIBUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Student’s t-distribution
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Percentile distribution
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Probability distribution
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Z-distribution
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Detailed explanation-1: -The t-distribution, also known as the Student’s t-distribution, is a type of probability distribution that is similar to the normal distribution with its bell shape but has heavier tails. It is used for estimating population parameters for small sample sizes or unknown variances.
Detailed explanation-2: -Revised on July 9, 2022. The t-distribution, also known as Student’s t-distribution, is a way of describing data that follow a bell curve when plotted on a graph, with the greatest number of observations close to the mean and fewer observations in the tails.
Detailed explanation-3: -One-sample, two-sample, paired, equal, and unequal variance are the types of T-tests users can use for mean comparisons.
Detailed explanation-4: -The notation for the Student’s t-distribution (using T as the random variable) is: T t df where df = n – 1. For example, if we have a sample of size n = 20 items, then we calculate the degrees of freedom as df = n – 1 = 20 – 1 = 19 and we write the distribution as T t 19.