classnote2_part2

classnote2_part2 - W8”? , median, mode ~ raw,...

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Unformatted text preview: W8”? , median, mode ~ raw, ,‘n-ée/sgmrée mryz , Wu‘fallcax g-fimylmz/ 0W,:(mm “ {705(7éc‘m - Panama L24; waged @|-‘ Which one Ts Sump/LBW 4:0 OccHZe/V r.) A; mean E: medium @ [,1 Mode (£11; whzclh one Is “0% wag/{3W 4:0 watsz A range L7) ,»_ Tm-{TQV‘EHMI/Fhm fimng. @ C : mun]an P ‘- S‘Warv‘ Mei/35659“- (>13; wklch {00L Com dpg'grgbug +149 cgwter‘, ‘Hflé Sprawl; and 1H“? fliewngs Data 001ng (gox rawh— wl‘t‘flzer {lift Econ4l & The obj ective of this exercise is to review the concepts of sample mean, median, sample standard deviation, sample variance, quartiles, percentiles, mode, min and max as well as the construction of some of the graphs studied in class. The following data taken from the printed edition of the economist Oct 8th 2005, presents information of percentage change on year ago of the consumer price index for some emerging countries. Consumer prices, % change on year China Hong Kong India Indonesia Malasya Philippines Singapore South Korea Taiwan Thailand Argentina Brazil Chile Colombia Mexico Peru Venezuela Egypt Israel Suth Africa Czech Republic Hungary Poland Russia Turke 8 When we start working it is good to first order the data Consumer prices % change year Venezuela Russia Argentina Indonesia Turkey Philippines Thailand Brazil Colombia Egypt Mexico Chile Suth Africa Malasia Hungary India Taiwan South Korea Czech Republic lsrael Poland China Hong Kong Peru Sin a ore Mode: The most commonly occurring observation(s): 1.3, 1.6, 3.9, 6.0 n: Number of observations: 25 Sample Mean: 3(- = 12x, : 4.81 ’7 i=1 Medlan: 1f n IS odd plck the element on the (n + ) posmon, if n 18 even ple the element 2 2+(n‘+2) 2—2u position: 3.9 on the Q1: Median of all observations whose position is strictly below the position of the median: 1.65 Q3: Median of all observations whose position is strictly above the position of the median: 6.5 X—percentile: Smallest value such that x% of the data is smaller or equal to this value, the _ . . . o _ . 80 percentile IS. 7.0 S )()5 t 20 I Ltls PWHPPMQS. (0° Max: Largest observation: 15.9 HQNX . the VRWE lb 7‘0 Min: Smallest obsservation: 0.7 Five number summary: (Min, Q1, Med, Q3, Max) =(0.7, 1.65, 3.9, 6.5, 15.9) Range: Max-Min: 15.2 IQR (Interquartile Range): Q3-Q1: 4.85 Sample standard deviation: s)c = i—} = 3.8 Need {27 mmeMW the "‘1 i: 1 'i°*‘ PDPMLoiFon variance W 1 _ Standard o‘er/ration . Sample Variance: s: 2 2(13. —X = 15.45 M n —1 i=1 1 I _ _ 7. 0} 1': W i; [IXV’ Box Plot , "‘1 Q1, Med, Q3, IQR: (1.65, 3.9, 6.5, 4.85) V; ’ J {R Ql- 1.5*IQR: —5.625 Q3 + 1.5*IQR: 13.775 wiles! Leela Tamer few! in our WM: bOOF ‘5 Left —hand whisker: Smallest observation that is no smaller than Q1 - 1.5*IQR: 0.7 I . a, we . . . and up?” M" g a 1ght —hand whisker: Largest observatlon that is no larger than Q1 + 1.5*IQR: M 0‘" fixebook 12.40 \, Ot‘l 1 20b t‘ ts'd th h'sk : t 5 0 CNN Dm‘w e, u sueva ues serva ions on 1 e ew 1 ers l OI .3“ GM, tateme Connect observations with box and plot outside values. I a Box Plot Consun‘er prices % ch *Do not get confuse because I draw a vertical dot plot, remember that it could be vertical or horizontal W / 92. 9} of 91 l %’W" D Z \l I! . 4,3 g 3 ID (2» I44 [(9 Computian 15!: 06/, w made/st Wm mm m m mm fwd [ -517», war] \ ‘ Mt“: .r /—» amt/WW +42 owl—(2W m r1425 wwLe - ebb- 1/2..‘FOI I flu? twp PM?! fend wz (cage/9t '07 (AI/7904125 ...
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classnote2_part2 - W8”? , median, mode ~ raw,...

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