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Help plz stuck on this!
The sample mean from a study is 100 with a standard deviation of 20. I decide to multiply all the scores by two. What is the new mean and new standard deviation? f you have no idea, try creating a sample of just three different scores -any scores. Calculate 9. its mean and standard deviation before and after the transformation. Which statistics change, or dont, and by how much?).
math   Statistics-And-Probability   
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For example three abschvalons ะ 140,70190 Mean-140+70+90 3 each store is Nelhpleby 280, Mo, IO Mean 280 1401180 200 stamdand davlation af original data: 140 10, 90 s I(140-10o)(70-100)+(90-100)/3 s2 1600+900 +100/3 s 260013 s2 g66 666 S- 29.43 f each obsesvation is Multiplo by 2 2s0 40, 180 (280-20)+(140-200+C180-200)-3 s 6400+ 3600400) 13 s 3,466 666 s: 58.86 Tf you obs erve the above psoblem If you multiph the obsesvations by 2 the vesult also chamges by muli ot two for b oth maom amd so (100 ftginal msam multiply each obses vatom the šesult also is Multipe of rwo 2x100 200. it also appy to sD as well (29 43 x 2 ะ 58 86 cappra mat) so If you got beyou Muthiplo by 2 tha mean isこtoo Aftes, Multipl catom with 2 tha maam auso chamge bg SD İS 20 beghe : 20 Artch Multiplication each obseh Vationis 2 the sD also ch amges by 4 New Me am and SD- 200, 40

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