Test 1 - test01_s

Fi t nd hem ean oft olow i gr hef l ng ouped dat by

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Unformatted text preview: Fi t nd hem ean oft olow i gr hef l ng ouped dat by fili outt abl a lng het eand m aki al ng lneces ar cal at ons s y cul i . ( ( s C om pl e t t e bel . a) 8pt ) et he abl ow Cl s as Fr equency f Mi dpoi x nt f ·x 1–2 22 1. 5 33 3–4 30 3. 5 105 5–6 7–8 3 28 5. 5 7. 5 16. 5 210 9–10 5 9. 5 47. 5 Tot s al 88 412 ( ( s s ng t i or at on i par a) he m ean i b) 4pt )U i he nf m i n t( ,t soft ss hi etofdat i x = 4. as¯ 7 ( ound t one deci alpl R o m ace) Sol i ut on: W e have x = 412/88 ¯ ( pts) 7 4. 681818182 5.U s ng any m et i hod,find t s pl st he am e andar devi i oft dat 2 6 15 9 11 22 1 4 8 19 d at on he a: ( ound ans R wer t one deci alpl o m ace) T he s d.i s = 7. .s 1 ( pts) 3ea. 4. ( oundi t one deci alpl 7r ng o m ace) 6.U s t pr ded boxe he ovi and- hi kerpl t ans ws ot o wer each oft ques i bel . he t ons ow 2 1 0 0 4 8 12 16 20 24 28 32 36 ( A ppr m at t fir t quar ie: Q 1 = 11 a) oxi e he s tl ( A ppr m at t i er b) oxi e he nt quar ie r t l ange: I R = 16 Q (c) A ppr m at t l ges oxi e he ar tdat ent y: m axX = 34 a r ( W hat per d) cent age oft dat t he a hat f lbet al ween Q 1 and Q 3? Per cent...
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