sample of HiTec Electronic supply stores were organized into a frequency distribution. The mean of weekly sales was computed to be $ 3‚219‚360‚ the median $3‚192‚000‚ and the mode $3‚176‚800. a. Sketch the sales in the form of a smoothed frequency polygon. Note the location of the mean‚ median‚ and mode on the x-axis. - Mode 3‚176‚800 < Median 3‚192‚000 < Mean 3‚219‚360 Therefore‚ b. Is the distribution symmetrical‚ positively skewed or negatively skewed? Explain your answer
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range and measures of center‚ including median‚ mode‚ and mean. Materials: - Bag of mixed candy‚ or something comparable the students can sort and count - Whiteboard/blackboard - Computer and display ability - Legal sized paper or construction paper Objectives/Learning Targets: By analyzing a set of data‚ students will be able to calculate mean‚ median‚ mode‚ and range. Introduction: - After greeting the class show a short video‚ on mean‚ median‚ mode‚ and range‚ called “Measures of Central
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Name: __________________________________________ Algebra Keystone Exam Review 1) Simplify the expression: √ √ √ √ A) √ B) √ C) √ D) A right triangle has one leg that is twice the length of the other leg. If the hypotenuse is √ ‚ find the length of the longer leg. 2) A) 8 B) 16 C) 4 D) 32 3) Which statement has the largest value of x? A) √ B) √ C) √ √ D) √ √ 4) Simplify: ( √ ) A) B) C)
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006‚742.122 Median- $1‚016‚630 Standard Deviation- $2‚741‚746.033 Salaries with $100‚000 Bonus Data Mean- $2‚106‚742.122 Median- $1‚116‚630 Standard Deviation- $2‚741‚746.033 With the $100‚000 bonus‚ the mean and the median increased by $100‚000‚ because we increased all the salaries by $100‚000. However‚ the standard deviation was not affected‚ because the distribution of data was not affected. Salaries with 20% increase Data Mean- $2‚408‚090.547 Median- $1‚219‚956
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mean‚ median‚ and mode. Mean is “a measure of central tendency that offers a general picture of data without inundating one with each of the observations in a data set” (Sekaran‚ p. 396‚ para 3). A more common term for mean is average. The median is “the central item in a group of observations when they are arrayed in ascending or descending order” (Sekaran‚ p. 396‚ para 5). Mode is the “most frequently occurring phenomenon” (Sekaran‚ 396‚ para 6). The following table shows the mean‚ median‚ and
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Answer the following problems showing your work and explaining (or analyzing) your results. 1. Describe the measures of central tendency. Under what condition(s) should each one be used? Mean- Works good when it comes to test scores Median- should be used when describing something like average income. Mode= is good is you want to see what is you best seeing product in a store situation. 2. Last year‚ 12 employees from a computer company retired. Their ages at retirement are listed below.First‚
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means the mean is not an accurate description of the data. This is because outliers affect the mean. If a set of data is skewed left‚ the mean will be pulled down the left‚ making it an unreliable number for describing. A resistant number would be the median because outliers do not affect it. Although ABC has the highest mean of viewers‚ I would rank CBS as the most overall successful network. The reason being‚ CBS overall has better ratings that ABC. The only reason ABC has such a high mean is because
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VANSA DOOKERAN Additional Mathematics SBA School Based Assessment Vansa Dookeran 5X TABLE OF CONTENTS Page # Project Title 3 Purpose of Project 3 Method of Data Collection 4 Presentation of Data 6 Analysis of Data 18 Discussion of Findings and Conclusion 31 Bibliography 33 Appendix 34 Title: To investigate the time taken to achieve
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format Lastname_Firstname_Week3.doc. Assignment (32 points due by 11 pm October 14th) 1) The file ‘FastFood’ contains the amount that a sample of nine customers spent for lunch (in $) at a fast food restaurant. a) Compute the mean and the median. b) Compute the variance‚ standard deviation‚ range‚ and co-efficient of variation. c) Are the data skewed? If so‚ how? 2) The file ‘ChocolateChip’ contains the cost (in cents) per 1 ounce serving‚ for a sample of 13 chocolate chip cookies.
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half of their credit customers are from urban locations. Variable: Income The range of customer’s income is $49‚000‚ with the highest income at $74‚000 and the lowest at $25‚000. The mean (average) income of a customer is $46‚020. The median income is $44‚500 (half way point between the 50 total incomes‚ 25 incomes below and 25 incomes above). The value that appears most frequent (mode) is $54‚000 and $57‚000. This information is beneficial to AJ Davis in
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