Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Form of t- Distribution
1. The students t - distribution like the normal distribution has bell shaped frequency curve which is symmetrical. The only parameter which determine the shapes of the curve is the degree of freedom. With a change in the degrees of freedom the shape of the curve will also change.
2.The mean of the t- distribution is zero. This is so case of normal curve also.
3.The variance of t- distribution is greater than one and as the sample size increase it tends to move towards unity. It is for the reason that it has been mentioned above that the single parameter which change the form of distribution are the degrees of freedom or the size of the sample. If samples size becomes very large there is no difference between distribution and normal distribution .
4.T distribution can be used even in case of large samples but the large sample theory cannot be use for small samples.
5. The value of t ranges from minus infinity to plus infinity.
The followings diagram gives the steps of distribution and a normal distribution. It would be noted that as the degrees of freedom changes the shapes of the t- distribution also changes.
the above diagram shows two important characteristics of t- distributions. First a t- distribution is lower at the mean and higher at the tails than a normal distribution. Second the distribution has proportionately greater area in its tails than the normal distribution. Interval widths from t- distribution are therefore wider than those based on the normal distribution.
Disadvantage of standard Deviation It is not easy to understand and calculate. It gives more weight to the extremes and less to the items nearer to mean. Since
A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i
Normal 0 false false false EN-IN X-NONE X-NONE
Profitable Casino Corp. (PCC) is a Harrah's wannabe, intent on mimicking Harrah's analytical marketing techniques. For example, PCC issues virtually all gamers a PCC "Rewards" car
The 2 nd phase of operations Research is to construct a mathematical model representing the system under study. It requires the identification of both static and dynam
Determining Sample Size for Estimating poportions It is necessary to determining the sample size for a problem involving proportions. This deals with the percentage of f
Step 1: Research Towers of Hanoi problem The Towers of Hanoi is a problem frequently used to teach recursive programming techniques. Step 2: Run the assembly code from Hanoim
Problems based on LPP when feasible region is a line segment or it does not exist. 1. Maximize z = 2x+3y subject to the constraints X + y ≤ 1 X + y ≥ 3 X, y ≥ 0
A Paper mill produces two grades of paper viz. X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper in
a paper mill prodecs two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper in
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd