* **X^T means not on the exam!!** * System components: * These are NOT CONSTANT! They VARY. Time Space Measurement * Data are the facts and figures collected, summarized, analyzed, and interpreted * The data collected in a particular study are referred to as the data set * The elements are the entities on which data are collected * A variable is a characteristic of interest for the elements * The set of measurements collected for a particular element is called an
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the arithmetic mean, the median and the mode. A central tendency can be calculated for either a finite set of values or for a theoretical distribution, such as the normal distribution. Occasionally authors use central tendency to denote "the tendency of quantitative data to cluster around some central value." [1][2] Mean: It is also known as the arithmetic average, mean is the sum of value of all the observation in a set of data divided by the total number of the observations. Median: when values
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1. Group A: mean= 26+38+19+51+58+19+61+34+68+21/10= 39.5 Group B: mean= 24+18+11+16+22+8+10+22+21+16/10= 16.8 Group C: mean= 39+44+42+34+37+38+41+31+33+44/10= 38.3 Group D: mean= 98+80+86+71+90+86+94+92+82+73/10= 85.2 2. Group A: mode= 19 since it is the only one to occur twice Group B: mode= 16 and 22 since they both occur twice Group C: mode= 44 since it is the only number to occur twice Group D: mode= 86 since it is the only number to occur twice 3. Group A: Median= The fifth and
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BSc IT Basic Mathematics Semester - I 1 INTRODUCTION • Analysis of data is one of the important stages for experimenter to test out his hypothesis, draw conclusions and take decisions. Stages involved are: Collection Tabulating & Analysing data • i) ii) iii) Data analysis • Data analysis is a process of gathering, modeling, and transforming data with the goal of highlighting useful information, suggesting conclusions, and supporting decision making. Data analysis has multiple facets
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Question The following lists various ways of describing types of data or variables: A. nominal B. ordinal C. interval, discrete, cross-sectional D. interval, continuous, cross-sectional E. interval, discrete, time-series F. interval, continuous, time-series G. ratio, discrete, cross-sectional H. ratio, continuous, cross-sectional I. ratio, discrete, time-series J. ratio, continuous, time-series Place one of the letters, A thru J, in each of the spaces provided which best describes
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(question 8) Chart 7: Ogive of assessing servicing attitude Based on above chart, it can be seen that x< 2 (assuming that x is mark), cumulative frequency is zero. It means that there is no responder who marks from 0 to 2 in term of servicing attitude. With x<4 on the x axis, it corresponds with about 6 on the y axis. This means that there are 6 responders who marked lower than 4. Similarity, for x<6, the above chart shows that 31 responders marked lower than 6. In other word, 31 responders
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| |Mean | 7,377.33 |Mean | 8,260.90 | |Standard Error | 135.38 |Standard Error | | | | | |143.86 | |Median | 7,316.50 |Median | 8,140.50 | |Mode
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Data Visually and Through Numbers Data File 2 - Chapter Three (Show all your work) 1) A teacher asked each of her students how many novels they had read in the previous six months. The results are shown below. 0 1 5 4 2 1 3 2 2 7 2 5 0 1 0 1 1 2 6 0 2 3 1 2 7 1 4 2 3 1 7 0 0 2 1 1 0 6 1 7 Construct a frequency table for the number of novels read. Solution: Number of novels read | Frequency | 0 | 7 | 1 | 11 | 2 | 9 | 3 | 3 | 4 | 2 | 5 | 2 | 6 | 2 | 7 | 4 | 2)
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appropriate? Descriptive Yes, Frequency (30) and mean (14.63) are used to describe the data. 3. What other statistic could have been used to describe the length of labor? Provide a rationale for your answer. Length of labor was described for both the experimental and control groups using means (14.63) and standard deviations (7.78). The exact length of labor was obtained, providing ratio level data that are descriptively analyzed with means and standard deviations. 4. Were the distributions
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consisting of three years sales figure from 2011-13 FY’s. Descriptive Statistics for Population Data | | | Mean | 1260613.249 | Standard Error | 31342.14415 | Median | 1262395.307 | Mode | #N/A | Standard Deviation | 188052.8649 | Sample Variance | 35363880006 | Range | 679897.672 | Minimum | 859243.22 | Maximum | 1539140.892 | Sum | 45382076.95 | Count | 36 | Mean and Standard Deviation: The average sales figure for three years is calculated to be 1260613.25T. The standard
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