Management Data Visualisation

Question: Describe about the Data Visualisation? Answer: Introduction Data visualisation and data analysis with pictorial or graph and chart is become an important part in the todays business analytics. We have to analyse the data for the journalists in this assignment. In a world-wide several journalists were killed by the terrorists or other local authorities. Data related to this topic is provided within excel document file. We have to study several aspects related to the journalists who are killed worldwide. We have to use different analytical or statistical tools for the purpose of analysis of data for the deaths of journalists occurred worldwide. Data Elements There are total 24 variables given in the data set. Last column is used for the description purpose. Here we only consider 21 variables for study. The list and characteristic of these variables is given below: No. Variable Scale Description 1 Name Nominal Name of Journalist 2 Role Nominal Role of Journalist 3 Motive Nominal Motive confirmed or not 4 Sex Nominal Sex of Journalist 5 Date Killed Nominal Date of journalist killed 6 Year of Death Scale Year of Journalist killed 7 Month of Death Nominal Month in which journalist killed 8 Country Killed Nominal Country in which Journalist killed 9 Organization Nominal Organization of Journalist 10 Nationality Nominal Nationality of Journalist 11 Medium Nominal Type of media for which Journalist works 12 Job Nominal Type of job of Journalist 13 Coverage Nominal Type of coverage 14 Freelance Nominal Whether Journalist is freelance or not 15 Local/Foreign Nominal Journalist is foreign or local 16 Source of Fire Nominal source of fire 17 Type of Death Nominal type of death 18 Impunity (for Murder) Nominal impunity for murder 19 Taken Captive Nominal taken captive or not 20 Threatened Nominal threatened or not 21 Tortured Nominal tortured or not 22 Profile on CPJ Nominal profile information 23 Image Nominal image reference site 24 Description Nominal Description of how Journalist killed Data Visualisation and data analysis: There are total 1589 observations for each variable under study. The frequency for journalist is found as 1502 and for media workers it is found as 87. Out of total journalists, 1083 were motive confirmed while 419 were unconfirmed. Percentage for male journalist is found as 86.8%. In the year 2007, total 112 journalists were killed and this is the maximum number of journalist killed in any year. Most of the journalists (about 251) were killed in the country Iraq. Maximum Proportion of journalists killed is found for the print media. 184 journalists killed by the terrorists were freelance media worker. 137 journalists were killed in the foreign countries. 713 journalists were murdered by terrorists. Most of the journalists were killed in the month May and November. Now, we have to test one hypothesis that whether the average number of journalist killed per month are 130 or not? For checking this hypothesis we need the following information: For this hypothesis, the null and alternative hypothesis is given as below: Null hypothesis: H0: Average number of journalists killed is 130. Alternative hypothesis: Ha: Average number of journalists killed is not 130. For this one sample t test, we have p-value is greater than the level of significance or alpha value 0.05, so we do not reject the null hypothesis that Average number of journalists killed is 130. The 95% confidence interval for the average number of deaths of journalists per month is found as (122, 142). Interpretations or conclusions: 1) There are total 1589 deaths of journalists recorded over the time period from 1992 to 2014. 2) Most of the deaths are observed in the country Iraq.3) Most of the deaths are observed for print media journalists.4) Deaths of female journalists are comparatively very less than the male journalists.5) On an average, about 132 journalists are killed during the period from 1992 to 2014.6) Most of the journalists were killed in the month of May and November.7) Most of the deaths of journalists occurred due to the murder. References: 1) Abramowitz, M., and Stegun, I.A., "Handbook of mathematical functions", Dover publications, New York, 1964 (1972) 2) Crow, E.L., Davis, F.A., and Maxfield, M.W. "Statistics Manual", Dover publications, Inc New York, 1960 3) Fraser, D.A.S., "Nonparametric methods in statistics", John WileySons, New York, ChapmanHall, London, 1957 (2nd 1959) 4) Kanji, G.K., "100 statistical tests", Sage publications London, Newbury Park, New Dehli, ISBN: 0 8039 8704 8, 1993 5) Papoulis, Athanasios "Probability and Statistics" Prentence-Hall International Editions, ISBN: 0 13 711730 2, 1990 6) Siegel, S. "Non-parametric statistics for the behavioral sciences", McGraw-Hill book company, Inc. New York, Toronto, London, 1956 7) Van den Brink, W.P., and Koele, P. "Statistiek, Deel 3: Toepassingen", Boom Meppel Amsterdam 8) D. Rowntree, Statistics without tears: a primer for non-mathematicians, (Scribner, New York, 1981). 9) G. Kranzler and J. Moursund, Statistics for the Terrified 2nd ed., (Prentice Hall , Upper Saddle River, 1999). 10) G.F.K. Naylor and L.E. Enticknap, Statistics Simplified. An Introduction for Social Scientists and Others. (Harcourt Brace Jovanovich Group, Sydney, 1981).11) H. Motulsky, Intuitive Biostatistics: A Nonmathematical Guide to Statistical Thinking, (2nd ed.) (Oxford University Press, 2010).12) D.B. Orr, Fundamentals of Applied Statistics and Surveys, (Chapman and Hall, New York, 1995).