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.
A PAPER MILL PRODUCES TWO GRADES OF PAPER VIZ, X AND Y. BECAUSE OF RAW MATERIALS RESTRICTIONS, IT CANNOT PRODUCE MORE THAN 400 TONS OF GRADE X PAPER AND 300 TONS OF GRADE Y PAPER I
what is pert and cpm?
Solve the following Linear Programming Problem using simple method Maximize Z= 3x1 + 2x2 Subject to the constraints: X1 + X2 = 4
Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0
Solve the following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2
Demerits a.It cannot be used in the case of bi variate distribution. b.If the numbers of items are greater than say 30, the calculation becomes tedious and requ
Panel Sampling Here the initial samples are down on random basis and information from these is collected on regular basis. Itis semi permanent sample where members may
The scientific methods is thus based on certain basic postulate which can be stated as under: a. It relies on empirical evidence: b. It utilizes relevant concepts;
what are the preconceptions do you bring to the study of research
application&techniques
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