SPSS - Planned Contrasts for One-Way ANOVA

In this video, I show how to set up and interpret planned contrasts after a signficant one-way ANOVA.
If you want to learn more about the concepts behind planned contrasts, I suggest watching Andy Field's video on the subject: • Following-Up ANOVA (GL...

[@henkzeggelaar6935]

Very clear, excellent speed, just perfect!

[@A_e.00s]

dude helped me out so much, better explained then my statistics class at University.

[@seblaroc2168]

Thanks for this. Exactly the refresher I needed.

[@You80820]

This is so helpful! such a good explanation

[@heather1963]

This video helped me SO much. Thank you!

[@obinnaaku2398]

VERY HELPFUL! STRAIGHT TO THE Point. Thanks

[@sanne433]

wow I struggled with this subject but it is very helpful! Thank you :)

[@shelbyyoung3311]

Extremely helpful. Thank you!

[@dreams_tea_ivy3169]

Thank you! This video really helped me.

[@yukou8128]

Crystal clear. Thank you so much!

[@ranrosenhaus8414]

perfect explanation !

[@alenezi74]

Many thanks bro. Straight forward

[@aishwarryadeore5664]

Thank you so much! That helped a lot!

[@annecamper589]

Very very useful! Thanks a lot!!!

[@thedivi21]

Thank you! Great explanation!

[@marciascott2424]

great video! to the point - thank you!

[@JopieKlep13]

Very helpful, thanks!

[@PlusMinou]

THANK YOU!

[@evangeline6]

Thank you

[@KriishnaaG]

I've conducted a planned contrast and all of my values for the t column are negative, what does this mean and do I include this -
sign whilst reporting my results?

[@dougmaynard5039]

The sign indicates the direction of the difference - negative just means that the (average) mean for the second group is higher than the (average) mean for the first group. Reporting the sign is optional - just make sure it's clear to the reader what the direction of the mean difference is.

[@KriishnaaG]

Thanks a lot for your help!

[@kevinrollins9584]

Would it be equal if you used the coefficients 2, -1, -1 for the first contrast?

[@dougmaynard5039]

+kevin rollins Sure, that would be fine. It would be equivalent to the 1, -.5, -.5 that I did here, meaning that you should get the same t, df, and p results. So long as the contrast is balanced, the actual values are up to you.

[@elainemurray5341]

great.thanks

[@animel8ve]

Perfect thank you

[@annaszymanska5579]

THANK YOU!