12 Calculating sample size and power

[@yashraghuvanshi4813]

Can not believe that this is teaching faculty of "topmost" institute of country! Feels like a 10th grade student is reading book to me

[@hishighnessab5540]

Even after so many negative feedbacks, nothing has been done to improve upon the clarity of lectures. Very unfortunate

[@remyaneelambaran2129]

it is really hard to answer the quiz questions only by listening to this session. please simplify and upload a video as it is a vital part of biostatistics.

[@NARAYANNE007]

Good lecture for those who have some strong biomed statistical basics in place

[@lekshmyraj4803]

Some of ur classes are short and easy to understand Sir.. But some like these should be taught more clearly with examples. Cannot even answer some of the questions without mugging up the whole thing

[@MrFilu13]

Thank you sir..at time 13.40, the most valuable information I found, for the first time.. wonderfulyl explained

[@tejaswi9427]

I have been hitting my head to understand this

[@dr.vamshikrishna1002]

🤣🤣

[@DeepakSoni-vs4re]

Yes so tough

[@ks17793]

Issuing an order to give bcbr exams suddenly after all these years, asking for money from students all over india, and what do you do in return? Upload such videos of incompetent professors who cant even say a word other than what is written in slides. Seems like this man wanted to teach history rather than statistics, trying to make students mug up everything as he must have done the same back in those days. Have Shame and replace him.

[@dramit4635]

What have we done to deserve these third class topics and even worse teachers😱

[@Vinayakas4u]

No clarity not even confident, just confusing , not even got answers in this video , plz sir improve ur teaching skills

[@Cathcare]

It’s not the teaching level..it’s ur understanding level is poor

[@sagardeepdatta8330]

Had I been crystal clear, i would not have consulted this video. It's his duty to make us understand while we ensure that we will also try our best to understand. I am glad you could decipher everything!

[@sagardeepdatta8330]

Pls change teacher

[@mohansaikrishna9505]

​@@Cathcareyes our knowledge is poor .that is why v are listening these videos...

[@arfatahmad2726]

Nice lecture

[@dr.nitinjl829]

In lecture 8 it was told that Precision is reproducibility and Validity is closeness to true value, not in this lecture Precision is closeness to true estimate .....pls teach

[@cestovatelekar]

You taught calculation considering we are already prepped with it. My stream of education just got this injected that i had no clue i would ever get back in to. How come confidence coefficient 0.95 to become z - 1.96 ?

[@NARAYANNE007]

In a normally distributed bell shaped curve, if you take 2 SDs and mark them on either side of the midpoint, 95% of the total entries would fall within them... that is 1.96 SD to be exact and is said as a round 2 SD in some quick calculations... ie, for eg, in a data collection of the heights of students of a class, the 2SD( ie 1.96 SD to be exact) from the centre (mean) on either side would encompass 95% of the class... the remaining 5% are the extremes of height (the lowest 2.5% and the highest 2.5%)

[@cestovatelekar]

​@@NARAYANNE007 thank you Narayan sir. It's been a while and you answer came a bit late. Meanwhile I had took it as a constant factor and gave exam as well, I passed. I am sorry if I may have appeared to be negating the efforts taken in the lecture, however I admit that because of your message I came here again and I don't want to miss this to acknowledge my gratitude towards the efforts teachers have taken in explaining. Thank you sir to you for your reply (either way if you are or your are not part of Nptel) and to whole teaching faculties involved.

[@NARAYANNE007]

@@cestovatelekar Thank you. I have been watching these videos to give my upcoming BCBR exam. All the best for your endeavors

[@naitiksinghchauhan802]

Kuch samajh nahi aya bhai, please provide more examples in steps and be clear

[@aman2111111111]

Kindly provide more examples

[@ragalove1]

Thank you sir.it was very helpful

[@drpoonamgupta5246]

Read twice ...could not understand. What to do?

[@draksingh78]

arre sir ,bolna kya chahate ho!!

[@mohammeddanish1156]

worst lecture of nptel no clarity plz put some effort in explaining this part as it is important topic and the reader just brushed through it casually

[@prateekgourav]

This could have been taught better...

[@suganyaezhilarasan985]

Thank you sir. It was informative definitely

[@DashWatson]

Very poorly explained. Just glossing over the topics superficially rather than in depth.

[@DrSamneet]

Pls improve your teaching, highly unsatisfactory.

[@dentistry1997]

Needs improvement

[@varsha.parihar4814]

Very nice sir

[@sakshisharma6734]

Very unclear lecture

[@laxmichouhan6972]

Just reading the slides that to not in a flow. No explanation given. Really bad teaching.

[@Ph-xj9lb]

Not helpful at all

[@sanelsunny9137]

Useless... Please tell this guy someone that we also know to read text content... In a better way than him..

[@ayshshaxs9443]

Not helpful.

[@prakashduraisamy9681]

Worst lecture

[@mohansaikrishna9505]

Just reading slides... explanation needed with good examples...not well explained

[@dr8478]

got nothing after wasting half an hour #worst lecture

[@shivanishivtarkar227]

Horrible teaching. Do they even understand by watching their own videos? Even we can read slides,what’s the use of video then?!

[@hakfhsjakhfjksah]

We can't solve the mcq by watching this video. Couldn't understand anything. kzbin.info/www/bejne/gGWXqGaJbMt1a68si=7HXpqgX4UKmZuekf This ones much better!

[@nithyarajprakasam1425]

P

[@shuvronilchakraborty8163]

Sir help me from these zombie

[@pratheek152]

Very nice sir