Tutorial 3 Question 1 a) A company wishes to review its distribution operation and from its time sheet records it found that 144 vehicles were loaded in a 24 hour period. A frequency distribution table was prepared from the data as follows: Time to load (minutes) Number of vehicles 40 up to 50 17 50 up to 60 61
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Frequency Distribution (A) Introduction 1. Ungrouped data versus grouped data Ungrouped data (Raw data): It is a list of individual observed values of the random variable Grouped data (a frequency distribution): It is a table that displays the data in grouping along with the number of occurrences that fall into each group. 2. The components of a frequency distribution a. Class limits: They identify the inclusive values in a class of a frequency distribution The
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Lesson plan Subject:Mathematics Grade : 9 Topic:Statistics Sub topic:tally chart and frequency Duration: 25 minutes No. Of students:18 Date:22 September 2013 Lesson objectives: By the end of the lesson‚ students will be able to: • Construct tally charts • Construct frequency tables • Find mode by drawing a frequency table Prior knowledge: All the students are expected to know: • What is mean‚ median and mode • Find mean‚ median and mode by using data. Materials: 4 set of Play
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Test the appropriate ... Wednesday‚ May 11‚ 2011 at 2:18am by Erica Applied Statistics Assignment Guidelines Perform a two-tailed hypothesis test using the steps outlined in the assignment description. In a Word document‚ create a report that includest the following: Null and alternate statements. Pasted Microsoft Excel data output. Identification of the ... Sunday‚ October 23‚ 2011 at 6:05pm by Truth Statistics Null hypothesis: Ho: p = .80 -->meaning: population proportion is equal
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Unit 1 - Fundamentals of Statistics Veronica Chavis American InterContinental University In this paper I will examine and analyze the data regarding employee’s job satisfaction as it relates to gender. I have provided an interpretation of the extrinsic results for the three age groups‚ as well as I have given the results of the surveys regarding both qualitative measurement and quantitative measurement. I have discussed the results based the graphs that included in the paper; I have all so
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The Mean and Median: Measures of Central Tendency The Mean and the Median The difference between the mean and median can be illustrated with an example. Suppose we draw a sample of five women and measure their weights. They weigh 100 pounds‚ 100 pounds‚ 130 pounds‚ 140 pounds‚ and 150 pounds. To find the median‚ we arrange the observations in order from smallest to largest value. If there is an odd number of observations‚ the median is the middle value. If there is an even number of observations
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The study discussed in “A Comparison of Financial Performance‚ Organizational Characteristics‚ and Management Strategy Among Rural and Urban Nursing Facilities” was conducted to understand the influence of patient care amongst beds‚ in-patient days‚ patient days‚ patient care revenue‚ nursing salaries‚ and facilities expenditures between the rural and non-rural nursing homes/facilities in New Mexico. The main hypothesis that was tested among the dataset was does rural homes have a lower average of
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How many standard deviations is my hypothesis (sample mean) is away from the actual (null hypothesis population mean) T – statistic Rejecting the null may be a mistake = p –value ONE SAMPLE 3 formulas T.Dist.rt (t‚ sample size - 1 “df”) -> alternative that mu is bigger than a 1 – T.Dist.rt (t‚ sample size – 1) -> mu is less than a T.Dist.2t(t‚samplesize - 1) -> not equal to p < significant level reject the null NEVER accept null TWO SAMPLE directly get the p-value
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A statistics practitioner took a random sample of 50 observations from a population with a standard deviation of 25 and computed the sample mean to be 100. a.Use an interval estimate to estimate the population mean with 90% confidence.[mu-1.64*SD/√n‚mu+1.64*SD/√n] [100-1.64*25/√50‚100+1.64*25/√50][94.2017‚105.7983]-90% Confidence b.95% confidence. [mu-1.96*SD/√n‚mu+1.96*SD/√n] [100-1.96*25/√50‚100+1.96*25/√50][93.0704‚106.9296]-95% Confidence c.99% confidence. [mu-2.57*SD/√n‚mu+2.57*SD/√n] [100-2
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Statistics should be interpreted with caution as they can be misleading; they can both lie and tell the truth.Discuss. AS we all known that statistics plays a very important role in the social development. People use statistics in each field of science‚ such as physical sciences‚ humanities‚ especially the biological sciences. Statistics as a series of methods which used to summarize or describe our observations tell the person who made the statistics relative objective results or truth‚ at the
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