STATISTICAL TECHNIQUES AND TOOLS
T DISTRIBUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
If the sample size n = 12, will it be applicable to use t-distribution?
|
|
YES
|
|
|
NO
|
|
|
Either A or B
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -A sample size beyond 30 results in the approximately normal shape and the parameters (mean and variance) of t distribution also coincide with normal at this point. Hence, the student t distribution is used when the sample size is less than 30.
Detailed explanation-2: -The degrees of freedom represent the number of values in a statistical calculation that are free to vary. In the case of the t-distribution, the degrees of freedom are N-1 as one degree of freedom is reserved for estimating the mean, and N-1 degrees remain for estimating the variability.
There is 1 question to complete.