mattud.com/Stadent/PluyerHomework.aspa homeworkid-442752060questionld-14thushed-

Question

mattud.com/Stadent/PluyerHomework.aspa homeworkid-442752060questionld-14thushed-fabebicid 46444248centerwin ye STA 2023 Fall 2017 930 02892 930-1045 Homework: HW 2.4 Score: 0 of 1 pt 2.4.49 Save 14 of 15 (13 complete) V Score: 60.52%, 9.08 o. Question Help You used SS,-E(x-x) 2 when calculating variance and standard deviation. An alternative formula for the standard deviation that is sometimes convenient for hand calculations is shown below. You can find the sample variance by dividing the sum of squares by n-1, and the sample standard deviation by finding the square root of the sample variance. Complete parts (a) and (b) below. (a) Use the shortcut formula to calculate the sample standard deviation. Simplify your answer. Round to one decimal place as needed.) Enter your answer in the answer box and then click Check Answer part remaining DOLL F6 F7 F8 F10 F11 F12 PrtscrInsert Devete 4 5 6 8 9 0

Explanation / Answer

sample stddev=s=2.1

ANSWER 2.1

x xbar x-xbar (x-xbar)^2 19 17.6 1.4 1.96 18 17.6 0.4 0.16 16 17.6 -1.6 2.56 20 17.6 2.4 5.76 14 17.6 -3.6 12.96 17 17.6 -0.6 0.36 18 17.6 0.4 0.16 14 17.6 -3.6 12.96 20 17.6 2.4 5.76 20 17.6 2.4 5.76 20 17.6 2.4 5.76 20 17.6 2.4 5.76 19 17.6 1.4 1.96 15 17.6 -2.6 6.76 16 17.6 -1.6 2.56 16 17.6 -1.6 2.56 15 17.6 -2.6 6.76 18 17.6 0.4 0.16 19 17.6 1.4 1.96 18 17.6 0.4 0.16 sample variance ==82.8/20-1 total 352 82.8 =82.8/19 mean=sum/total =352/20 4.357895 mean'= 17.6 samplestd='sqrt(variance) =sqrt(4.357895) samplestd 2.087557

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.