Test 1 - test01_s

T he r ul s oft s pl yi ded a s pl m ean of 3 and a s

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ul s oft s pl yi ded a s pl m ean of¯ = 3. and a s pl he es ent l es t he am e el am e x 12 am e 324.C om put t coe ci e he entofvari i oft s pl ecal hat t coe ci of at on he am e;r lt he ent vari ance ofs2 = 3. var at on ( V ) i defined t be ii C s o St andar D evi i d at on × 100% M ean For t s s pl hi am e CV = CV 58% Sol i ut on: Fr t gi om he ven i or at on s = nf m i 1. 82 CV × 100% 58% 3. 12 3. 324 1. 82 STA 2028/T 1 ( pts) 4 – Page 4 of4 – N am e: 9.H ei sofadul ght twom en havea m ean of63. n.and a s andar devi i of2. n.W hatdoes Chebyshev's 6i t d at on 5i Theorem s about t per ay he cent age ofwom en w i hi 2 s andar devi i oft m ean? tn t d at on he A nsw er: A t l t eas 75 % oft hei s s he ght houl f lw i hi 2 s andar devi i oft m ean. d al t n t d at on he Sol i ut on: B y C hebys hev,t per he cent age f l s t f m ul or k = 2, olow he or a,f 1 13 1 1− 2 = 1− 2 = 1− = k k 44 A s a per cent age,t s i 75% hi s ( pts) 10.M ake a good dr i oft f equency hi t am oft f l i dat 10 aw ng he r s ogr he olow ng a. Cl s as Fr equency f 50–52 3 53–55 56–58 8 12 59–61 62–64 13 11 Instructi ons. D r t hi t am on t axes s t aw he s ogr he ys em bel , l ow abel t hor zont axi us ng t he i al s i he mi dpoi sofeach cl si er .Labelt ver i nt as nt val he t calaxi i ar st ckm ksas0,5,10,15.D r t hi t am so aw he s ogr t hatt e ar no gapsbet her e ween t ver i he t calbar .A tt t ofeach bar( ect s he op r angl ,pl t f equency e) ace he r ft or hat cl s as . Sol i ut on: W e cal at t m i cul e he dpoi s ofeach cl s and l nt as abelt hor zont he i alaxi us ng t s i hem . T he bar s ( r angl )ar cont guous and cent ed on t m i or ect es e i er he dpoi s nt . 15 12 10 13 11 8 5 3 0 48 51 54 57 60 63...
View Full Document

Ask a homework question - tutors are online