boys and girls. The purpose of calculating a Cohen’s D is to calculate the ideal size for two means‚ it is also used to reveal the difference between means‚ which could be used to in conjunction ANOVA and t test reporting. The d=.90 can be revealed using Cohen’s d by dividing the mean difference in the boy and girl’s self-esteem scores by the standard deviation. In addition to this method‚ mean one less mean two divided by a pooled standard deviation could be used (Lind‚ 2011). Reference:
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handle personal problems. Variables: The relationship studied involves a dependent variable and independent variable; however‚ the former is broken down into 5 categories. Dependent variables (X): * Frequency of social media application usage (mean) * Frequency of Facebook usage * Frequency of Google+ usage * Frequency of LinkedIn usage * Frequency of Twitter usage * Frequency of YouTube usage The questions regarding these variables were posed in the survey
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Problem 1 Suppose that 6 female and 5 female applicants have been successfully screened for 5 positions. If the 5 positions are filled at random form the 11 finalists‚ what is the probability of selecting: A: 3 females and 2 males? B: 4 females and 1 male? C: 5 females? D: At least 4 females? Problem 2 By examining the past driving records of drivers in a certain city‚ an insurance company has determined the following (empirical) probabilities: [pic] If a driver in this city
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SPSS ASSIGNMENT #1 Read chapters 1‚ 2‚ and be sure to go through the SPSS tutorial (or “run the tutorial”). Then‚ follow these guidelines.S3 To Enter Data: 1. Click on the Variable View tab in the lower left corner of the screen. In the first box under the column Name‚ type the name you want to give the first variable (i.e.‚ “SCORE1” – NOTE: there are no spaces allowed in the variable name). The name of your variable can be up to eight characters (no spaces a permitted by SPSS in the variable
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AP Modern European History Textbook Reading Schedule Mrs. Goldberg Textbook: The Western Heritage Please be sure to keep up with all your reading. Each week you will have about 20 pages of your textbook to read and to read thoughtfully before you come to class. Some of your short answer test questions will come from the essential Questions and vocabulary posed here. NOTE: You might have to read other selections in addition to this reading. I highly recommend you take notes on the vocabulary words
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1.0 Executive summary Different people have their own hobbies and preferences that may influence their purchasing behaviour. Therefore‚ males‚ females have different preferences of buying a car. The purchasing behaviour also influenced by other factors‚ such as age‚ family size and life styles‚ for example‚ different aged children in families. This report will use graphs and statistics to highlight the different preferences between people of purchasing cars. 2.0 Background 2.1 Introduction
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shipment if the claim is true. A random sample of 36 batteries is tested and it is found that the sample mean is 45 hours. If the population of batteries has a standard deviation of 5 hours‚ is it likely that the batteries will be bought? 2. Each student at a university completed a questionnaire concerning the use of advising services. For the entire student body‚ the mean number of visits per year to an advisor was 3.1. It is hypothesized that this would decrease with the
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weight reduction program revealed the mean loss to be 9 pounds. At the .05 level of significance‚ can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value. 32. Dole Pineapple‚ Inc.‚ is concerned that the 16-ounce can of sliced pineapple is being overfilled. Assume the standard deviation of the process is .03 ounces. The quality control department took a random sample of 50 cans and found that the arithmetic mean weight was 16.05 ounces. At the
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Case 4: Pacific National Bank Pacific National Bank is a medium-sized bank with 21 branches. Until very recently‚ Pacific did not operate its own automatic teller machines (ATMs); instead‚ it relied on an outside vendor to operate these. Ninety percent of the ATM customers obtained cash advances with non-Pacific credit cards‚ so the ATMs did little to directly improve Pacific’s own banking business. Operations Vice President Maria Perez wants to change that‚ by having Pacific offer a broader
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Contents Univariate Data 2 Central tendency 2 Mean 2 Median 3 Mode 3 Trimean 3 Trimmed Mean 3 Spread 3 Range 3 Semi Inter Quartile Rang 3 Variance and Standard Deviation 3 Skew 3 Graphical Representations 4 Frequency Polygons& Cumulative Frequency Polygons 4 Histograms & Bar Graphs 4 Stem and Leaf plots 4 Box Plots 4 Describing Bivariate Data 4 Scatterplots 4 Pearson’s Correlation 4 Spearman’s Rho 4 Probability 4 Binomial Distribution 4 Assumptions:
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