How To...Calculate the Confidence Interval for a Sample

your videos are always so straight to the point and helpful, thanks for everything you do.

you explained it very clearly sir, thankyou!

good, so now i know how to calculate it, BUT why is it called confidence interval? it is just taking properties of my limited sample and multiplying it with bell curve properties to simulate that my data somehow magically is enough data so that i can reliably tell me by adding normal distribution properties mechanics, that it can tell me the chance that the populatin mean lies between these 2 values. sounds pretty daring. i have no clue yet ehy this works or should be true, and under which circumstances.

this video REALLY helped thx

Great video and came in right on time! Let me see if I can get the right answers now.

Amazingly explained - Thank you!

great video sir

phenomenal

Thanks for help! This video helped me so much more than my professor!! Keep up the great work Sir 😀

Easy to understand... at last. However, there are 4 results in the list of weights that are outside the CI range. 4/14= 28%. I thought that in a 95% CI range there would only be a 5% chance of having a result outside of the range

this is the best work❤

Nice, and what if my T table only has one-tail?

thank you. how do we know when to use the t table vs z score?

I have been searching on how to solve this problem and you WERE able to break it down and i was able to follow without any problems. Thank you

Very helpful, thank you so much.

very good job sir

so, any sample values above 999.47 and below 992.95 are rejects????

Thank you that was very clear. I am trying to understand what it means when someone says something like "that is one standard deviation out" when talking about outliers in a population. I heard it in relation to the distribution of IQ results and the challenges faced by people with an IQ at a certain (low) level?

Thank you so much😭 I’m doing my assignment right now and couldn’t understand the teacher that was supposed to teach me this. Thank you for such clarity in how it’s done.

if the sample size is more than 30 should we refer Z table rather than T table?

I'll try this today

very useful, explained very well, thank you!!!!!

Thank you very much! Was very helpful.

Very useful sir❤

4mks sure bet

OK it is in, Teacher Extraordinaire. Thank you for this.

Yar Mera paper hi ton Dy aa state da

Thank you. You manual calculation videos are really show the essence of statistics. I always use Minitab to analysis data, actually don't understand how to get the results. Your video helps a lot.

why is it when im doing the math at 95% CI it does'nt match with my excel curve Area result.. it yields around 75% only when im estimating the sigma values to plot the normal dis curve.

That was very clear. Thank you.

This was very much helpful, thank you.❤️

Thanks

Awesome

Thank you Sir!

You are the best professor

Thanks man

Thank you so much

Genius! Thank you so much

you da goat

you're solid my guy

Help me please how to calculate the n=14 in his video? Thank you

ty

Hello! What if the df value is 94? How will you find the T-value?

sir, you are a godsend. thank you so much for the informative but brief video!

Why do we indicate the t values on the curve? Shouldn't we be indicating the upper and lower limits (i.e. in this case 992.95 and 999.47) there instead?