Ejercicos estatisticas, Ejercicios de Estadística

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EXTRA EXCERCISES: FREQUENCY TABLES AND LOCATION MEASURES 1.- Complete the frequency table of the Variable X: Hours spent watching television per week knowing that the width of the interval is constant (ai) Interval mi mi fi Ni A 6 ] 0,08 E 1 0,2 ( 1 1 0,44 ( 1 0,76 [20 - 1 15 0,92 Eo- 1] 1 Note: mi is the mark dass 2.- Read the article: On Average, You're Using the Wrong Average: Geometric £. Harmonic Means in Data Analysis https://towardsdatasciencs.com/on-average-youre-1 (Link on Virtual Campus: Differences among Arithmetic, Geometric and Harmonic mean y2-the-wrong-average-geometric-harmonic-means-in-data-analysis-2a708e21e20 3.- Read teh article: What is Harmonic Mean? https://corporatefinanceinstitute.comfresources/knowledgefother/harmoni meanf 4.- Complete the following table and choose the best measure of Central Tendency for summari. Nobs Xx Y z w Remember: Problems with the Mean 1 3 3 27 0,09 1- Powerof each observation 2 4 4 64 0,01 2.- ExtremValues 3 5 5 us 0,70 3. Mathematical combination of the elements 4 6 6 216 0,68 5 7 7 343 0,90 6 8 8 52 0,29 7 3 3 72 0,20 8 10 10 1000 0,89 Geommean G= Tx, > u u 33 0,92 10 D 25 1728 0,82 _ a [Geom.Mean Harm.Mean == Median A E i Harm.Mean [Arit.Mean In which situations you cannot use the Geometric and Harmonic Mean? 5.- Complete following table using information of variables in point 4. Age. For point 8. Steam and Leaf x Y z w 30 42 48 P62th 31 43 50 D3th 34 4 50 Ql 34 4 52 02 35 4 52 as 35 4 52 Qs 35 45 53 Max 35 45 53 Min 36 45 54 38 45 54 6.- Draw the five summry graph (Box-plot) for each variable 38 45 54 38 46 54 7.- Fill the table knowing the followin; 38 46 55 Yi=Xi+20 38 46 55 Zi=xi*a 39 a 56 W=[X] [Y] 12), Vertical Stacked Vector formed by X.Y and 40 7 56 vi: Wi 41 47 56 x Y z w u 41 47 57 Nobs| 10| 10| 10| 42 a 58 SumOfElements| 4320| 42 a 58 42 a 61 8.- Create a Steam-and-Leaf diagram for variable Age (data in grey rectangle) Stem: 10 Units Leaf: 1 case each Leaf Unit: 1 9.- Create an histogram and an Ogive for Age using: a width (ai) of 5 units, Compare Histogram and beginning in the first mark class 32.5, Steam-and-Leaf Lower Bound closed "[" and Upper Bound Opened ") 10.- Read Virtual Campus Report 1. https://campusvirtual.ub.edufmod /resourcefview.php?id=3985781