Question

QIA Astudowl find grades in mathematic Physics English and Chemistry ane respectively 82 86, 90 and 70 is the respective Credits for these courses determine Seled one b48 c. 49 f.si 9.87 recieved 3.5, 3 and 1 are a 60 determine an A B for the same data appropriate averge grade Select one 87 b do cao ch 78 f 85 g 70 . C. 86 a @@36) @ @ @ @ Same data detemine the stander deviation a-4.8 b-6 C-s d_4-9 f51 go 6.2 SINALINIC

Answer 1

in - Data ascending 70, 82, 86, 90 order n=4. Q3= 3 (n+1) th observation. - 3.75 observation. + observation. 0.75 (4th - 3rd) 83 + 0.75(90 - 86) observation 86 Q3 86. B] Average grade Average = 70 +82 +86 +90 328 4 u. 82 : Dverage grade (Mean) Standard deviation (S.D.) c where Variance = E(X; -X) Mear=x 60-W)+(81-82)+(66-81)' +(-62) 니 56 :. Variance - Svariance S.D. = 7.5 : 56 Standard deviation = 7.5 Please line