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Sir at 10:30 you said that in z test population s.d is known but cant we use z test even if we dont have population std dev (using std error formula as Sample s.d/ square root n ) ? So wont standard error in z test also stay variable? (If we dont have population std deviation)
sir apne z test karne ke wakt bhi to unknown s.d ke liye 's' ko use karne bole the to waha pe bhi to different sample ke liye s ka value change hota tha
t(8degree of freedom), 0.10 = 1.860 is critical value of t for two tailed test. t(8degree of freedom), 0.05 = 1.860 is critical value of t for one tailed test. In some book we are given two tailed table value of t and in some book we are given one tailed t value. We use two tailed t value. See video again for more clarification. Hope this will help you.. Keep warching
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@@GouravManjrekar sir statndard deviation 30 and 38....i mentioned...but if i use t test than what will be the degree of freedom?n1+n2-2=30+27-2=55....what is the t value thn?some confusion thts why i ask...ok thnx fr u valuable feedback.
@@GouravManjrekar ha bro dekha...waha apka n ka value 12+15-2=25 thaa...joo 30 kaa niche hota hain...but mere math mein 30+27-2=55 hain joo 30 see jada hain..and n kaa value 30 see jada hoga toh T test use too nahi hota hain suna thaa?sir agar aap mind naa karo toh phir mere math koo phir se ekbar dek kee bataoge?main confusion me huu Z karu yah T karu....but thanks apko bese bhi....
Sir humare college me z -test ka formula Z=x-mean/S.D Aur t-test ka t=sample mean- population mean/S.D/√n Bataya h😢 kon sa sahi h samjh nhi a raha plz reply
Itna dimak lagakr samjhne ki kosis kar rha hu samjh nhi aa rha Gussa a rha h bas or phli bar samjhe ki kosis nhi ki h mene kai bar ki h jitni bhi bar ki copy band karke or rkh Di kyu samjh nhi aa rha mujhe
Please download student t table from description of video . In some book t table is given for two tail and in some book it is given for one tail. So download table which contain both one tail and two tail value and your Concept will be clear. Keep watching
samples of sizes 10 and 14 were taken from two normal populations with standard deviation 3.5 and 5.2. the sample means were found to be 20.3 and 18.6. test whether the means of the two populations are the same at 5% level. [ 0.05 t =2.0739]. Sir can you give ans t=? .9569
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F distribution👇👇🔥👇👇
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Sir part 2 kab ayega
@@gudduprasad3811 its already in the playlist bro
Thank u so much sir
Very nice explain......
Love a lot....❣️❣️❣️🇮🇳🇮🇳🇮🇳
Concept of two tailed and one tailed table value is clearly explained by you.... thanks sir....
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I've been following your videos for a while sir thank you very much for clearing all my doubts with relevant examples and clear explanations.
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Well defined... Outstanding way of deliver knowledge! THANK you Sir!
Wow 🎉
Difference between t test and z test
Got it... Sir
Glad that this video helping you...
It's a great effort from you sir...thanx for your contribution for us... 👍
Thank you
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@@GouravManjrekar Sure sir 👍
Kal mera exam , or aj ye video dekh kar pura clear concept , so so thanks sir , well defined ❤
Sir i really appreciate ur efforts🙏
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Very much amazing lecture ☺️ thank u sir ...today is my presentation on this topic in class and I learn it in just 1 hour.
Superb sir
Hatsoff to your patience
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Hii sir...thank you its very helpful for me..
And you are looking like tollywood hero. 😅😁
Thanks 😄
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OK sir👍
Very well explained. Thank you!💥
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STUDENT T DISTRIBUTION AND TEST: ua-cam.com/play/PLRNL7AjA6rjx40R-Y-hIEVawQXxbeUgiD.html
crisp and clear 💚💚💚💚
more helpfull thanks sir from lucknow
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crystal clear sir
Testing of Hypothesis: ua-cam.com/play/PLRNL7AjA6rjy_ryWXKMil8CjtLQjUiy0I.html
Nice explanation, Thanks Sir
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@@GouravManjrekar sure
Very valuable information 🙏
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excellent class sir
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I have learned a lot from you
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Great explanation 🙌
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STUDENT T DISTRIBUTION AND TEST: ua-cam.com/play/PLRNL7AjA6rjx40R-Y-hIEVawQXxbeUgiD.html
ua-cam.com/video/JQHSndzi-xk/v-deo.html chi sqaure Numericals
Sir at 10:30 you said that in z test population s.d is known but cant we use z test even if we dont have population std dev (using std error formula as Sample s.d/ square root n ) ?
So wont standard error in z test also stay variable? (If we dont have population std deviation)
@@hetanshthakore5886kya apka doubt clear hua? Mere ko same doubt hai? Please clear my doubt
Great eplaination sir
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Great sir 🙏🙏
Examples k liye n=5 liya
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@@GouravManjrekar ok....Ty sir ji
6:15 sir variance of t-distribution is v/v-2 for n>2
Thnx a lot sir
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@@GouravManjrekar Ok Sir
please can u do a session on estimation sir🙁. your videos are really helpful
Sir what is Degree of Freedom? Can u plz explain the concept
Thank you sir ❤️
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thank you sir
Most welcome
Thank u sir 🙏
Most welcome
sir apne z test karne ke wakt bhi to unknown s.d ke liye 's' ko use karne bole the to waha pe bhi to different sample ke liye s ka value change hota tha
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STUDENT T DISTRIBUTION AND TEST: ua-cam.com/play/PLRNL7AjA6rjx40R-Y-hIEVawQXxbeUgiD.html
🔥
Testing of Hypothesis: ua-cam.com/play/PLRNL7AjA6rjy_ryWXKMil8CjtLQjUiy0I.html
Sir ye bsc ke liye hai
Sir is there playlist for sampling theory
Right now no but in near future
@@GouravManjrekar ok thanks
18:00
Please someone answer... Ye t table question paper m ayegi ya hme yad krni padti h
You have used the same value of t(8 degree of freedom),0.10 and t(8 d.o.f)0.05
Can you please clarify that ?
t(8degree of freedom), 0.10 = 1.860 is critical value of t for two tailed test.
t(8degree of freedom), 0.05 = 1.860 is critical value of t for one tailed test.
In some book we are given two tailed table value of t and in some book we are given one tailed t value.
We use two tailed t value.
See video again for more clarification.
Hope this will help you..
Keep warching
@@GouravManjrekar sir, please upload the example videos(questions) belonging to t-distribution and your previous videos are really helpful.
ua-cam.com/video/wCDJ_1AjHbA/v-deo.html one Sample t test
@@GouravManjrekar Thanks sir
ua-cam.com/video/c8BGEmHFtCQ/v-deo.html Two sample t test Independent sample
this concept in one tailed test ,i am not understand now i can able to understand
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@@GouravManjrekar yes, I will.
Hello sir your explanation make me clearer n thank you so much for this video and can you please upload some examples of t distribution
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What is degree of freedom? i Know formula n-1 but can you please exaplain what it is?
WE WILL UPLOAD A SEPERATE VIDEO FOR THAT
@@GouravManjrekar Thank you so much.
ua-cam.com/video/nfbExOGWAS0/v-deo.html F test numerical
@@GouravManjrekar thank you
Sir non parametic tests clear
Please share normal distribution video
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Why sample size should be more or equal to 30
Sir if n1=30,n2=27.average mean=205,308,S/D=30,38.state whether there is any significant difference....here Which test i should use?T test or Z test?
Go for t test because you don't know sd of population
@@GouravManjrekar sir statndard deviation 30 and 38....i mentioned...but if i use t test than what will be the degree of freedom?n1+n2-2=30+27-2=55....what is the t value thn?some confusion thts why i ask...ok thnx fr u valuable feedback.
See this video for formula to apply
ua-cam.com/video/c8BGEmHFtCQ/v-deo.html
@@GouravManjrekar ha bro dekha...waha apka n ka value 12+15-2=25 thaa...joo 30 kaa niche hota hain...but mere math mein 30+27-2=55 hain joo 30 see jada hain..and n kaa value 30 see jada hoga toh T test use too nahi hota hain suna thaa?sir agar aap mind naa karo toh phir mere math koo phir se ekbar dek kee bataoge?main confusion me huu Z karu yah T karu....but thanks apko bese bhi....
@@shoumikchakraborty1255 both sample should be greater than 30 and population SD should be unknown so go for t test
Sir ji n=5 kyo liya tha ??
Can you explain degrees of freedom?
Sir humare college me z -test ka formula
Z=x-mean/S.D
Aur t-test ka
t=sample mean- population mean/S.D/√n
Bataya h😢 kon sa sahi h samjh nhi a raha plz reply
Jo video mein h vo sahi h
@@GouravManjrekar thanks u sir, aap bhut accha padhate h ☺️✨
Itna dimak lagakr samjhne ki kosis kar rha hu samjh nhi aa rha Gussa a rha h bas or phli bar samjhe ki kosis nhi ki h mene kai bar ki h jitni bhi bar ki copy band karke or rkh Di kyu samjh nhi aa rha mujhe
your concept is wrong.....for two tailes test we use alpla as alpha/2 which makes 0.1 to 0.05 and for one tail test we use t alpha
Please download student t table from description of video .
In some book t table is given for two tail and in some book it is given for one tail.
So download table which contain both one tail and two tail value and your Concept will be clear.
Keep watching
samples of sizes 10 and 14 were taken from two normal populations with standard deviation 3.5 and 5.2. the sample means were found to be 20.3 and 18.6. test whether the means of the two populations are the same at 5% level. [ 0.05 t =2.0739].
Sir can you give ans t=? .9569
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Statistics and Operations Research by Gourav Manjrekar
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Statistics , Operations Research , Mathematics.
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Sir is chapter ka name kya h
😍💚🇵🇰💗🇮🇳🥰
Yr mera to bhut dimak khrab ho rha h kuch samjh to aa nhi rha jab ye video dekhte h to man karta h padana hi band kar du ap bta lamba khich rhe ho
Sir plz explain in english
Thoda simpal karke nhi samjha skte the ap
No audio
don't speeak hena hena hena continously its irritating
Padhna hai padh Varna skip karde !
Very helpful🙏🙏🙏
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