DESCRIPTIVE STATISTICS: NUMERICAL MEASURES MULTIPLE CHOICE QUESTIONS In the following multiple choice questions‚ circle the correct answer. 1. Which of the following provides a measure of central location for the data? a. standard deviation b. mean c. variance d. range Answer: b 2. A numerical value used as a summary measure for a sample‚ such as sample mean‚ is known as a a. population parameter b. sample parameter c. sample statistic
Premium Arithmetic mean Standard deviation Median
the following for the data in Column K‚ “The degree of agreement among patrons that Remington’s has large portions‚” on the Remington Data worksheet of the Remington’s Data Set workbook: Mean -3.26 Standard deviation-0.911 Range -3 4 Mean 3.261306533 Standard Error 0.064596309 Median 4 Mode 4 Standard Deviation 0.911243075 Sample Variance 0.830363941 Kurtosis -1.16899198 Skewness -0.663704706 Range 3 Minimum 1 Maximum 4 Sum 649 Count 199 Largest(1) 4 Smallest(1) 1 Confidence Level(95.0%) 0.12738505
Premium Standard deviation Variance
Standard deviation is the square root of the variance (Gravetter & Wallnau‚ 2013). It uses the mean of the distribution as a reference point and measures variability by considering the distance of each score from the mean. It is important to know the standard deviation for a given sample because it gives a measure of the standard‚ or average‚ range from the mean‚ and specifies if the scores are grouped closely around the mean or are widely scattered (Gravetter & Wallnau‚ 2013). The standard deviation
Premium Statistics Standard deviation Arithmetic mean
Remington’s Steakhouse Project Brian Jones Research Methods & Applications Dr. Jones August 25‚ 2011 Table of Contents Table of Contents 2 List of Tables 3 Introduction 4 The Research Objectives 4 The Research Questions 5 Literature Review 6 Answers to Research Questions 8 Recommendations to Remington’s 15 References 18 Annotated Bibliography 19 Appendix(ces) 22 List of Tables Table 1 Demographic Description of the Average Remington’s Patron9 Table 2 Reported Income by Remington’s
Premium Standard deviation Variance Arithmetic mean
Leyang Xu Instructor Holly ENG 113 18 September 2012 Speaking is people’s one of basic functions. Without speaking‚ we cannot communicate with others. Of course‚ there are many languages in the world and even a number of dialects in one country. Those dialects may more and less effect people’s lives and people can gradually know the areas’ backgrounds and cultures throughout the dialects. In China‚ because its 5000-year history‚ from east to west or north to south‚ there are so many different
Premium Chinese language Han Chinese Standard Mandarin
The population standard deviation σ of a discrete random variable ‚ Measure how close a random variable tends to be the population mean μ‚ so you must understand μ before you understand σ If you have a random variable like a bet at a casino or and investment then the standard deviation σ measure the risk‚ if there is a lot of risk then the standard deviation is high The formulas for standard deviation are given below but you should look at the examples first Population mean Population variance
Premium Standard deviation Random variable Probability theory
A. What is the mean age of this sample? What is the standard deviation? The mean age is 47.5 years old. The standard deviation is 10.74832 years. http://www.calculator.net/standard-deviation-calculator.html Sample Standard Deviation‚ s: 10.748316881702 Sample Standard Variance‚ s2 115.52631578947 Total Numbers‚ N 20 Sum: 950 Mean (Average): 47.5 Population Standard Deviation‚ σ 10.476163419878 Population Standard Variance‚ σ2 109.75 If it follows the normal distribution The
Premium Standard deviation Arithmetic mean Statistics
the basic phonetics of the Chinese alphabet. However Chinese alphabets are not the same as English. We have other name to call it Pinyin. Chinese is a tonal language: say Pinyin seems like “Alphabets + Tones” like: “nǐhǎo !”—hello! Learn the Tones Mandarin is a tonal language‚ which means if you say a word with the wrong tone or inflection‚ you can be misunderstood. For example: “ma”There are four distinct tones. In Pinyin‚ the first tone: mā(mother) this tone is high and flat with no change in the
Premium Chinese language China Dialect
BANGLADESH STANDARDS AND TESTING INSTITUTION (BSTI) Introduction: Bangladesh Standards and Testing Institution (BSTI)‚ the only National Standards body of Bangladesh‚ is playingan important role in developing and Promoting industrial Standardization. Keeping in view that Standardization‚ metrology‚ testing and quality control in the industrial spheres are the basic pre-requisite of the infrastructure necessary for sound economic development of the country‚ the Government of Bangladesh has established
Premium Standardization Quality assurance Metrology
that order is long and uncertain. This time gap is called “lead time.” From past experience‚ the materials manager notes that the company’s demand for glue during the uncertain lead time is normally distributed with a mean of 187.6 gallons and a standard deviation of 12.4 gallons. The company follows a policy of placing an order when the glue stock falls to a predetermined value called the “reorder point.” Note that if the reorder point is x gallons and the demand during lead time exceeds x gallons
Premium Standard deviation Reorder point Safety stock