Jazak Allah.

@researchwithfawad

3 ай бұрын

Thanks for watching.

Perfect explanation, thank you very much

@researchwithfawad

3 ай бұрын

Glad it was helpful!

Thank you = شُكراً

@researchwithfawad

11 ай бұрын

Thanks. I am glad you liked it.

Asslamalaikum Sir Is there any video for identifying multivariate outliers using Mahalanobis distance?

many thanks, may i have a reference to justify keeping outliers based on z score

@researchwithfawad

Жыл бұрын

Pleasure. I am glad you liked it. Here is the reference Statistics for Research Students: An Open Access Resource with Self-Tests and Illustrative Examples by ERICH C. FEIN; JOHN GILMOUR; TANYA MACHIN; AND LIAM HENDRY, UNIVERSITY OF SOUTHERN QUEENSLAND TOOWOOMBA

Thank you very much for your tutorial. May I know if +/-3.3 the magic number? I have seen some said 2 some said 3. May I know if you have a reference to it? Thanks a bunch!

@researchwithfawad

3 ай бұрын

Thanks for watching. Here is the reference for outliers. Based on the recommendation of Fein et al. (2022), outliers were assessed using the Standardized (z) scores. A total of ......….. responses were outside the acceptable z score (+/-3.3) (Fein et al., 2022). The responses outside the acceptable threshold were removed from further analysis. Fein, E. C., Gilmour, J., Machin, T., & Hendry, L. (2022). Statistics for Research Students: An Open Access Resource with Self-Tests and Illustrative Examples. University of Southern Queensland.

@chantellewong1952

3 ай бұрын

@ResearchWithFawad Thank you very much Sir!

Sir I used standardized z value..I got some values in minus sign.. should I remove above -3??

@researchwithfawad

Жыл бұрын

Remove over +/-3.33

@MsSaddal

Жыл бұрын

@@researchwithfawad thankyou so much for your instant reply

jazakallahu khair, but may i ask you a question. i checked my data, which is total scores of a scale used on my psych research. i followed your guide, 1. checked the boxplot, but there is no star/circle outlier, 2. but when i check the frequencies, 22.5% of my data is on the highest quartile 3. checked the histogram, but my data is not showing bell-curve you normally found on normal distribution data 4. checked for the z-score (standardised score), but all of the value is in range of +/- 3.3 (highest is +1.32, there are 25 data out of 109 total that has the EXACT same value; while the lowest is -1.9, there are only 2 data out of 109 that has the exact same value) do you think i should transform my data? please guide me :(

@alittlefishhh

2 ай бұрын

and to add more context, when i analyze my second variable. the data is normal: 1. the histogram is kinda bell-curved in the middle 2. the highest and lowest z-score is +2, and -2 (its all different, unlike the first variable above) 3. and the significance value is >0.5 4. no outliers on boxplot

@researchwithfawad

2 ай бұрын

Thanks for watching. Even if one of the techniques shows no outliers, that can be enough for further analysis.

Should I consider checking outliers with Likert data? And how? Please provide a reference to refer to. Thanks.

@researchwithfawad

2 ай бұрын

Yes with Likert Scale data. For reference Based on the recommendation of Fein et al. (2022), outliers were assessed using the Standardized (z) scores. A total of ......….. responses were outside the acceptable z score (+/-3.3) (Fein et al., 2022). The responses outside the acceptable threshold were removed from further analysis. Fein, E. C., Gilmour, J., Machin, T., & Hendry, L. (2022). Statistics for Research Students: An Open Access Resource with Self-Tests and Illustrative Examples. University of Southern Queensland.

@mansoralzahrani2926

2 ай бұрын

@@researchwithfawad Thanks! Do I have to do it even if I will use SmartPLS for SEM-PLS? and why?

@researchwithfawad

2 ай бұрын

Yes it is process of cleaning the data.

Nice👍❤

@researchwithfawad

Жыл бұрын

Thanks for the visit

Assalamualaikum brother, if i have 495 samples, would trimming 100 outliers is okay? Thankyou very much

@researchwithfawad

3 ай бұрын

WAS. It is slightly on a higher side. But still if the remaining sample meets the minimum sample size criteria, you are good to go.

@rhafi2201

3 ай бұрын

@@researchwithfawad thankyou very much for the reply brother. May i ask again if it's okay. How much is too much regarding trimming the outliers and how much is enough.

Why looking the outlier from min and max value? and why value 16 is an outlier even its within the range ?

@researchwithfawad

2 ай бұрын

Thanks for watching. Please refer to Based on the recommendation of Fein et al. (2022), outliers were assessed using the Standardized (z) scores. A total of ......….. responses were outside the acceptable z score (+/-3.3) (Fein et al., 2022). The responses outside the acceptable threshold were removed from further analysis. Fein, E. C., Gilmour, J., Machin, T., & Hendry, L. (2022). Statistics for Research Students: An Open Access Resource with Self-Tests and Illustrative Examples. University of Southern Queensland.

@Grace-bz3px

2 ай бұрын

@@researchwithfawad does it mean its the IQR X1.5 = Outlier value?

Multivariate outliers?

@researchwithfawad

Жыл бұрын

Hopefully soon I can do a separate video on it