Part 3: Chi Square Test (χ2)| Question and Solution

Part 1: Chi Square (χ2) Test | Basics Formula and Conditions to Apply
• Part 1: Chi Square Tes...
Part 2: Chi Square (χ2) Test - Applications | Goodness of Fit Test
• Part 2: Chi Square Tes...
Que: In an Antimalarial campaign in India, Quinine was administered to 500 persons out of a total population of 2000. The no. of fever cases is shown below:
Treatment | Fever | No Fever | Total
Quinine | 20 | 480 | 500
No Quinine | 100 | 1400 | 1500
Total | 120 | 1880 | 2000
Discuss the usefulness of Quinine in checking malaria.
Statistical Methods | Complete (Playlist)
• Part 1: Hypothesis Tes...
Unlock GPAT Hard Copy - 5 Books Link: bit.ly/44jlkVn
Unlock GPAT Comprehensive Course Link (In Unacademy): bit.ly/45uwfge
Use My Coupon Code for Discounts: DRPK10
(Course including: 500+ Live Classes + Recordings + Mock Tests + DPPs + Notes + Doubt Sessions + 1 Year Validity)
Our Semester Books:
B. Pharm. (1st Sem) Books Link: bit.ly/3XvugVn
B. Pharm. (2nd Sem) Books Link: bit.ly/3HKXbyz
B. Pharm. (3rd Sem) Books Link: bit.ly/3xKGoqt
B. Pharm. (4th Sem) Books Link: bit.ly/3qYqCYl
B. Pharm. (5th Sem) Books Link: bit.ly/3ElbSHr
B. Pharm. (6th Sem) Books Link: bit.ly/3LtflXQ
B. Pharm. (7thSem) Books Link: bit.ly/3e2mQGV
B. Pharm. (8th Sem) Books Link: bit.ly/3I7glOC
Download Dr. PK Education App: bit.ly/2XlDmtw
Website: www.drpkeducation.com
Telegram: t.me/PKClasses100
Instagram: / pkclasses100
Facebook: / pkclasses100
Twitter: / pkclasses100
Chi Square Test
Basics of Chi Square Test
Formula for Chi Square Test
Conditions to Apply Chi Square Test
Parametric Test
Non Parametric Test
Hypothesis Testing
Test for Proportion of Successes
Z test
Chi Square Test
Students' t test
Fisher's F test
Sample and Population in Statistics
One tailed Test
Two tailed test
Level of Significance
Procedure for Hypothesis Testing
Critical z value
Null Hypothesis
Alternative Hypothesis

Пікірлер: 227

  • @namanmalhotra7485
    @namanmalhotra74854 жыл бұрын

    Whose here after hydroxychloroquinine became famous?

  • @pkclasses100

    @pkclasses100

    4 жыл бұрын

    Even I'm seeing after your comment. 😍👍🏻 Nice observation

  • @kiritokirigaya6574

    @kiritokirigaya6574

    3 жыл бұрын

    Its hydroxychloroquine (quine not quinine)

  • @anirbanghosh6621

    @anirbanghosh6621

    Жыл бұрын

    Oye

  • @niloferkhatri5432
    @niloferkhatri54323 жыл бұрын

    Watching this a night before exam and understood the entire concept within an hour. Thanks a ton for making such a wonderful video without utmost details and explanation!

  • @nameisadi1287

    @nameisadi1287

    Жыл бұрын

    Same !!

  • @self_official

    @self_official

    Жыл бұрын

    Same😁

  • @uttammaurya6119

    @uttammaurya6119

    11 ай бұрын

    Same😂

  • @chirashreechiki5481
    @chirashreechiki5481 Жыл бұрын

    Watching this video just last night before exam. It's very benificial for me . Thank u sir for explaining it wonderfully . This lecture is worth it and very nicely explained than our so called professor who know nothing about students understanding and lucuna rather than boasting abt themselves and scolding ..

  • @ROHIT-lk4ne

    @ROHIT-lk4ne

    Жыл бұрын

    Same here , btw what's your university name

  • @guliya6436

    @guliya6436

    Жыл бұрын

    Aktu😂😂

  • @vedantingley7285
    @vedantingley72853 жыл бұрын

    how to assume the hypothesis, we could say ho as quinie effective in treating malaria?

  • @vivekbind7292
    @vivekbind7292 Жыл бұрын

    beautiful explaination sir. was struggling with my pre phd coursework. but you have sorted out a lot

  • @rudradev1038
    @rudradev10384 жыл бұрын

    Sir you are great .... Aap Jaise teacher bahut Kam milte h.....

  • @rakeshprajapati8087
    @rakeshprajapati8087 Жыл бұрын

    Sr Pushpendra, Thank you so much It was a nice and concise video. Great Work Done...Appreciate your Effort

  • @swetalinasahoo5734
    @swetalinasahoo5734 Жыл бұрын

    Thank you so much sir your explanation is so simple and very much helpful for us❤️❤️❤️

  • @dkbswisdom9028
    @dkbswisdom90283 жыл бұрын

    Wowww👏👏👏What a clear cut explanation👏👏👏👌👌👌👌

  • @athirashaji8793
    @athirashaji87934 жыл бұрын

    It's very simple to understand and helped a lot

  • @lilly4189
    @lilly4189 Жыл бұрын

    Sir you make the concept easy and crystal clear thank you

  • @jupudysarika898
    @jupudysarika8982 ай бұрын

    Sir your videos are amazing. The concepts you are explaining are very clear. Thank you so much for your help

  • @deepankananag2478
    @deepankananag2478 Жыл бұрын

    Thank you Dr pushpendra. You saved me.

  • @divyanshusingh2729
    @divyanshusingh27293 жыл бұрын

    thanks a lot u really explain each point so clearly

  • @shirishaghosh1999
    @shirishaghosh19992 ай бұрын

    Thanks a lot for making us understand chi square test within this 13 minutes

  • @subhendubasak2868
    @subhendubasak28684 жыл бұрын

    Your videos is awsm..thank u for this kind of videos.it helps me a lot.

  • @seedsower1807
    @seedsower18072 жыл бұрын

    Wow! Well explained sir, thank you so much !

  • @arpansana4582
    @arpansana45823 жыл бұрын

    Dear Sir, Your class is very nice and understandable. But what is the way to recognize Chi Square ???

  • @Bhyble
    @Bhyble Жыл бұрын

    Perfect presentation. God bless you

  • @nehalodhinehalodhi3719
    @nehalodhinehalodhi37198 ай бұрын

    Thank you so much sir this very useful for understanding the chi x values I doing my nursing 4 year research now and I have to do data analysis and that is very useful for me 🙏

  • @alishafernandis8456
    @alishafernandis84563 жыл бұрын

    Thank you very much sir. Really helpful!!

  • @madhvitiwarishiv
    @madhvitiwarishivАй бұрын

    Thank you Sir for simple and easy explanation

  • @mahrukhnasir-zv8os
    @mahrukhnasir-zv8os Жыл бұрын

    Thanks sir today my paper and i am very happy apny jasy samjhya haii..

  • @kingprime7225
    @kingprime7225 Жыл бұрын

    God go bless this man.... thank you 🙏🙏🙏

  • @chandbasha683
    @chandbasha6832 жыл бұрын

    Really superb explanation

  • @khusbusahu5881
    @khusbusahu58813 жыл бұрын

    Thank you very much sir ......your teaching is very helpful for me.....

  • @minsuga-zv3sz
    @minsuga-zv3sz3 жыл бұрын

    It really helped alottttt... JazakAllah

  • @Gemreviewer
    @Gemreviewer3 ай бұрын

    Sir, please give clarity on how was the Null Hypothesis assumed?

  • @mamtayadav5200
    @mamtayadav52003 жыл бұрын

    Thanku so much for clearing my doubt... It was so helpful for my exams,, thankkuu so much

  • @prakharagrawal8120
    @prakharagrawal81202 ай бұрын

    sir what if we assumed the null hypothesis that quinine is effective...what will be difference in calculation??

  • @loislovescheese4776
    @loislovescheese47767 ай бұрын

    for the X2 goodness of fit test: what if you had 3 replicates for each variable (say i have variables a, b, c, d and 3 replicate values for each (eg variable a has values 0.1, 0.2, 0.3) can I do the chi squared test on the 4 variables? Do I have to find the mean of each variable then do the chi squared test? or is there a better test for that? Thanks!

  • @MahiMahi-kf1ro
    @MahiMahi-kf1ro4 жыл бұрын

    Really , helpful .... Thank you sir .

  • @richasingh46
    @richasingh464 жыл бұрын

    Sir this video is really helpful. But i am unable to understamd what to test to apply in different questions. Pls help me sir i have exam of Phd cource work.

  • @oshadeenavoda9728
    @oshadeenavoda97283 жыл бұрын

    Wow marewoless you are chemistry and biometrics legend

  • @swathigmadakari6124
    @swathigmadakari6124 Жыл бұрын

    Thank you so much sir for the beautiful and simple explain

  • @rahulpathak9649
    @rahulpathak9649 Жыл бұрын

    Excellent information sir thanks

  • @Dr.ChandanaChandrashekar
    @Dr.ChandanaChandrashekar2 жыл бұрын

    Thank you sir, its helps to do for my research work

  • @anushaarekonda1088
    @anushaarekonda10883 жыл бұрын

    Sir,in this question null hypothesis is quinne is effective in treating malaria ,I think; since it is a claim

  • @kotarameshbabu5379
    @kotarameshbabu5379Ай бұрын

    Thank you so much sir very useful

  • @golimounika0333
    @golimounika03333 жыл бұрын

    Tq so much for the clear explanation and allowed us to take a screen shot sir 😁

  • @lovelylucky2312

    @lovelylucky2312

    2 жыл бұрын

    How we get 0.05 there ??? Please answer me!!

  • @Aqsa-Aqsa
    @Aqsa-Aqsa3 жыл бұрын

    thank you so much sir.. it's really helpful

  • @pradhanchhandita1804
    @pradhanchhandita1804 Жыл бұрын

    Thank you sir for this clear informative video

  • @jyotimandloi414
    @jyotimandloi4143 жыл бұрын

    Soo thankful..explained very nicely..tq sir

  • @jayshu7734
    @jayshu7734 Жыл бұрын

    It help me a lot

  • @abhishekprajapati7738
    @abhishekprajapati7738 Жыл бұрын

    u teach really awesome sir

  • @IndiLores709
    @IndiLores709 Жыл бұрын

    Thanks for great explanation

  • @kumarvankadaru6667
    @kumarvankadaru66673 жыл бұрын

    Thank you sir, you made concept easy and presented in capsule form, without leaving basics..

  • @lovelylucky2312

    @lovelylucky2312

    2 жыл бұрын

    How we get 0.05 there ??? Please answer me!!

  • @vickyrajput9039

    @vickyrajput9039

    Жыл бұрын

    @@lovelylucky2312 beacuse of degree of freedom.

  • @lovelylucky2312

    @lovelylucky2312

    Жыл бұрын

    @@vickyrajput9039 I entered into my 3rd year bro 😂😂. Very early response

  • @pkclasses100

    @pkclasses100

    Жыл бұрын

    😂😂

  • @dwarakid3663
    @dwarakid36633 жыл бұрын

    Superb explanation ..thnx

  • @AbidAli-rq7bn
    @AbidAli-rq7bn4 жыл бұрын

    Love from pakistan...its helpfull TnQ sir..

  • @DurgaMAA-zp9ov
    @DurgaMAA-zp9ov7 ай бұрын

    Thanks sir🙏 Bahut bahut dhanyawad 🙏😍

  • @1453-y9h
    @1453-y9h2 жыл бұрын

    may your grace be too much abundant

  • @mihirinimanthika9541
    @mihirinimanthika95413 жыл бұрын

    This was very helpfull to me.thank you so much sir.love from srilanka❤️

  • @pkclasses100

    @pkclasses100

    3 жыл бұрын

    Glad to know 👍🏻 Thank you for the appreciation. Keep studying and Share the Video Links with your friends and help us to spread the knowledge. ❤️💜💙💛💚

  • @pixiedust4949
    @pixiedust49494 жыл бұрын

    Thank you so much sir😊

  • @shr8901
    @shr89014 жыл бұрын

    Crystal clear

  • @vaishnavikulkarni5736
    @vaishnavikulkarni57363 жыл бұрын

    Sir how to applying binomial distribution in chi square test

  • @jojven7514
    @jojven7514 Жыл бұрын

    awesome vdo sir

  • @arwadarugar1747
    @arwadarugar1747 Жыл бұрын

    Thank you so much..

  • @shreelatha2476
    @shreelatha24762 жыл бұрын

    Thank you so much sir

  • @mrinmoyjyotigoswami1079
    @mrinmoyjyotigoswami10793 жыл бұрын

    Thank you sir❤️

  • @littleada
    @littleada Жыл бұрын

    Thanks for screenshot!

  • @gurparassingh7680
    @gurparassingh7680 Жыл бұрын

    Appreciable

  • @sachini7815
    @sachini78153 жыл бұрын

    Thankyou very much sir.

  • @Nanak456
    @Nanak4564 жыл бұрын

    It's sooo helpfull sir...

  • @NehaSharma-mv9vk
    @NehaSharma-mv9vk4 жыл бұрын

    Chocolate of 250g produced in a factory were observed to have standard deviation of 2g. A random sample of 20 chocolates showed a standard deviations of 1.5g. What is chi value for the sample?? a) 7.2 b.) 6 c.) 12 d) 33.3 Please solve it

  • @jahnaviarroju4690
    @jahnaviarroju46902 ай бұрын

    How do we assume hypothesis ,why don't we assume H⁰ as quinine effective in malaria,???

  • @sonastephen4609
    @sonastephen46097 ай бұрын

    Sir I have a question what will we do if their is any less than 5 value or 0 in the table how can we do that

  • @ritabratapramanik6447
    @ritabratapramanik6447 Жыл бұрын

    Thank a lot sir ❤

  • @mitalianand1823
    @mitalianand18233 жыл бұрын

    Very helpful sir🙏🙏👍👍👍

  • @aakashyadav5765
    @aakashyadav57653 жыл бұрын

    Sir, if the Null hypothesis was assumed as "Quinin is effective in checking Malaria" in that case with the above calculation that would have been failed and rejected. So conclusion would have been "Quinin is NOT effective in checking Malaria". Will that also be right?

  • @sangeetabaruah720

    @sangeetabaruah720

    2 жыл бұрын

    i also have the same doubt

  • @mukeshsharma-ml5or
    @mukeshsharma-ml5or4 жыл бұрын

    Excellent 👍

  • @alwayshappy4523
    @alwayshappy452310 ай бұрын

    Thankyou so much sir

  • @sahiba8733
    @sahiba87333 жыл бұрын

    It's really helpful to me

  • @jamunarani8361
    @jamunarani83612 жыл бұрын

    Thank u so much sir very helpful

  • @alishasiddiqui2387
    @alishasiddiqui23874 жыл бұрын

    Thank you so much Sir for this video. It helped me a lot.

  • @chinyaphytuithung2611
    @chinyaphytuithung26115 жыл бұрын

    Sir for NIPER jee application..do we have to sent the hard copy too ..

  • @advikace8847
    @advikace88472 жыл бұрын

    tnq soo much

  • @rehman6664
    @rehman6664 Жыл бұрын

    Very nice thank you sir g

  • @dwarakid3663
    @dwarakid36633 жыл бұрын

    excellent ..thnx a lot

  • @mohitgehlot6582
    @mohitgehlot658210 ай бұрын

    Thank you sir

  • @betheldisuza9444
    @betheldisuza9444 Жыл бұрын

    A big thanks to u sir tomorrow is my final exam n your video helped a lot.

  • @pkclasses100

    @pkclasses100

    Жыл бұрын

    My best wishes.

  • @akashankolekar2231
    @akashankolekar22314 жыл бұрын

    thank you so much sir .......

  • @nehaborkar4034
    @nehaborkar40344 жыл бұрын

    Sir u are best .👍👍👍👍

  • @chandanchadha8571
    @chandanchadha85712 жыл бұрын

    Thanks buddy

  • @prashiddharanabhat3352
    @prashiddharanabhat3352 Жыл бұрын

    Thank u sir ❤

  • @abhijitmondal1851
    @abhijitmondal18512 жыл бұрын

    Thank you so much 🙏

  • @meghakriti4954
    @meghakriti49543 жыл бұрын

    Why we take null hypothesis as not effective?

  • @luvshm
    @luvshm2 жыл бұрын

    What if we take H°= effective in checking malaria After the calculation the answer will be same like null hypothesis will be rejected then it will not effective. How is this ambiguity in this question? Plz explain sir

  • @KartikKumar-qf8yt
    @KartikKumar-qf8yt2 жыл бұрын

    Very helpful😀

  • @mahaveerjajoria5836
    @mahaveerjajoria58367 ай бұрын

    very nice sir 🙏

  • @dwarakid3663
    @dwarakid36633 жыл бұрын

    Thanx for the example, thro Minitab evaluated P = 0.03, since P < Alpha which is 0.05 , we reject the Null Hypothesis ...

  • @Swetapal_

    @Swetapal_

    Ай бұрын

    How do you assume what has to be taken as null hypothesis and alternate hypothesis?

  • @user-fi5wr2uf4r
    @user-fi5wr2uf4r Жыл бұрын

    thnks for this

  • @arindomboruah8165
    @arindomboruah81654 жыл бұрын

    Why we took Quinone as non effective?

  • @AkhtarAli-wh4uh
    @AkhtarAli-wh4uh6 ай бұрын

    Bahot acha thaaa

  • @suryarockstar837
    @suryarockstar8372 жыл бұрын

    Suprr sir... really useful sir ....

  • @sahiba8733
    @sahiba87333 жыл бұрын

    Thank you, sir

  • @ommohammed429
    @ommohammed4294 жыл бұрын

    Best ever

  • @kevinmunge8431
    @kevinmunge84312 жыл бұрын

    are we not considering whether the test is a two tailed test and divide the level of significance by two? or this is not considered in this kind of test?

  • @hardikmaind9833

    @hardikmaind9833

    Жыл бұрын

    Chi test are 1 tailed test....so no need to divide

  • @deepaksanabal
    @deepaksanabal5 ай бұрын

    Thankyou sir

  • @devikarajeev5040
    @devikarajeev50403 жыл бұрын

    Thanku

  • @MuhammadBilal-hb8lp
    @MuhammadBilal-hb8lp4 жыл бұрын

    Sir yahan yates correction kiu applu nahi ki...its degree of freedon is 1