Pair T Test example using excel / Conduct and Interpret pair T test in excel

[@deepashreechatterjee1681]

very nice explanation sir. I wanted to know the difference between one tail and two tail p values and you explained very well

[@danaamirbayeva6568]

Thank you, Sir 🙏

[@mayakiran3000]

Thank you so much 🙏🏻

[@samihasharma8785]

Sir , for pre and post analysis more than 30 samples which test will be apply.

[@covistarkovi]

Thank you very much:)

[@winvictorywin5612]

Hello
I am having airborne dust concentrations data for >1 micron size, >3 micron, 5 micron and >10 micron size.
(> means greater than)
These data was taken before and during dust producing work in field study.
N=5
How can i compare these before and during operations data ?
It seems that there is relative percent variation in dust concentrations in atmosphere between before and during operation data. (Taking >1) micron as 100 %)
Before operation:
The relative percent variation of concentration with different particle size is as below. For example
Concentration of >1 micron size particle is 100%.
>3 micron: 80%
>5 micron : 60%
>10 micron: 40%.
During operation:
Concentration of >1 micron size particle is 100%.
>3 micron: 90%
>5 micron : 80%
>10 micron: 70%.
It seems that >10 micron particle share is increased due to that machine operation...?
Which test is suitable for analysing these type similar data for discussion ?
How to use statistics?
Any comparison among these concentrations of different particle sizes ?
thank u.

[@wafaalotaibi5273]

Thank you !

[@deepakchandrashekar5770]

Thank u