genuine evidence of difference in accident rates between the two operations. The Analysis: The analysis of the data was started by doing descriptive statistics for the data as shown below. Table 2: Showing the descriptive statistics for the brick and tile data. Variable N
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Statistics for Business Intelligence – Hypothesis Testing Index: 1. What is Hypothesis testing in Business Intelligence terms? 2. Define - “Statistical Hypothesis Testing” – “Inferences in Business” – and “Predictive Analysis” 3. Importance of Hypothesis Testing in Business with Examples 4. Statistical Methods to perform Hypothesis Testing in Business Intelligence 5. Identify Statistical variables required to compute Hypothesis testing. a. Correlate computing those
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What are the characteristics of a population for which a mean/median/mode would be appropriate? Inappropriate? The analysis of data begins with descriptive statistics such as the mean‚ median‚ mode‚ range‚ standard deviation‚ variance‚ standard error of the mean‚ and confidence intervals. These statistics are used to summarize data and provide information about the sample from which the data were drawn and the accuracy with which the sample represents the population of interest. The mean‚ median
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room patients. As defined by Brase/Brase’s Sixth Edition Understanding Basic Statistics‚ a population is defined as “ the data [omitted] from every individual of interest.” Likewise‚ a sample is defined as “the data [omitted] from only some of the individuals of interest.” While examining this data‚ specific parameters (numerical measure the describes an aspect of a population) were used along with the sample statistic (numerical measure that describes an aspect of a sample.) Qualitative (describing
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Research‚ Statistics‚ and Psychology Paper PSY 315 Research‚ Statistics‚ and Psychology Paper Two important factors of psychology and studying it are statistics and research. This paper will explain what research is and the scientific method. This paper will also explain how research is important to psychology. When a researcher does studies on psychology they receive data from the subjects‚ they are studying. In any type of research there are two major types of data‚ they are primary data and
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Important Publication of Official Statistics A few important publications containing official statistics for general use are given below: Statistical abstract of India: This annual publication is brought out by the CSO and contains the statistics of various sectors of the Indian economy at least for the last five years. This also gives state-wise statistics at least for the last year. India- Pocketbook economic information: This publication is brought out annually by the Ministry of Finance
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Q-1 STATISTICS PLAYS A VITTAL ROLE IN ALMOST EVERY FACET OF HUMAN LIFE.DECRIBE THE FUNCTIONS OF STATISTIC.EXPLAIN THE APPLICATION OF STATISTICS. ANS- MEANING OF STATISTICS- ACCORDING TO SELIGMAN “STATISTIC IS A SCIENCE WHICH DEALS WITH THE METHOD OF COLLECTING‚ CLASSIFYING‚ PRESENTING‚ COMPARING & INTERPRETING THE NUMERICAL DATA TO THROW LIGHT ON ENQUIRY.” ACCORDING TO CROXTON & COWDEN- “STATISTICS IS THE SCIENCE OF COLLECTION‚ PRESENTATION‚ ANALYSIS & INTERPRETATION OF NUMERICAL DATA FROM LOGICAL
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simple random sampling. Stem plot A stemplot (or stem-and-leaf display)‚ in statistics‚ is a device for presenting quantitative data in a graphical format‚ similar to a histogram‚ to assist in visualizing the shape of a distribution. Unlike histograms‚ stemplots retain the original data to at least two significant digits‚ and put the data in order‚ thereby easing the move to order-based inference and non-parametric statistics. To construct a stem plot‚ the observations must first be sorted in ascending
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Statistics Case Study-1 Age Weeks Employed 55 21 30 18 23 11 52 36 41 19 25 12 42 7 45 25 25 6 40 21 25 13 25 11 59 34 49 27 33 18 35 20 a. Age Weeks Employed Mean 37.75 Mean 18.6875 Standard Error 2.974195 Standard Error 2.188452 Median 37.5 Median 18.5 Mode 25 Mode 21 Standard Deviation 11.89678 Standard Deviation 8.753809 Sample Variance 141.5333 Sample Variance 76.62917 Kurtosis -1.17143 Kurtosis -0.21626 Skewness 0.337402 Skewness 0.522601 Range 36 Range 30
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Question 1 a. Mean age = 960/20=48 b. Standard Deviation = 10.74832 Web address: http://easycalculation.com/statistics/standard-deviation.php Frequency distribution table for denomination. Score f(frequency) 1 1 2 2 4 2 5 1 6 3 7 3 8 1 9 3 10 3 12 1 N=30 c. What is the percentage of people who identify themselves as Baptist? 3/20 = .15 x 100 = 15% What is the mode of church attendance? 5 Question
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