Quiz 2 Chapter 3 - Stats MA 243 Quiz 2 Ch 3 Spring 2013...

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Unformatted text preview: Stats MA 243 Quiz 2 Ch 3. Spring 2013 f”)- ‘ 1. Match up {) Q Formula for standard deviation L Number in Population Q Sample Mean Q Formula for mean 1 Median a Number in sample tL Population Mean L M Formula for it of standard deviations from the mean & Standard deviation of population ’- 5; Number of standard deviation from the mean __C_Standard deviation of sample 2. For the data 2 4 _7 810 11 12 14 14 14 find the a.mean ’5 / L / b. median 7 3 c. mode : mg mmg‘mr’ of my) TM @010 spreads Mm wmrm. 3. What does is the standard deviation 3 measure of wi d I)? ‘u., I “m; x iii-iii}? W" " it “h, p ‘ii‘x "jkflli his,“ '\ , £ :11” "‘4 m 71' mifl My“ ,. 4. if the mean of a population is 30 and the standard deviation is '10, iim a. the 2 value for x=20. 0—30 = 40 = 2970’" 75 b. is 20 rare? 1/ No become 2 Falls torn/WW; (JUNO. ./ 5. Given tfi‘éllboxplot shown, 01 s: “0 OS; 70 Max:510 mm -: l O l : 5 a.>lee the five number summary labeling what each represents. b. What%of the datal betweenS and 70? s. (f ' c Wh t' um? 7" fa ‘/ . 3 IS . @3270 m 75/. 01° dam d. ls lt a normal d'izjrlbution (symmetrlc bell)? Yes, no, or close. 0 e. What ls the range? 5/ 90' I 2 (/ Boxplot of Column 1 w L______,|_____L.__——-|———|———-l 1 U 20 40 60 80 Sample Value ...
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