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Questio 111 Not yet anewered Marked out of 10.\"?! The following are sample values collected from a etudv, 5, 24, 42, 16, 2|], 8. Calculate the fcllovting i.) Arithmetic mean 7 ii.) Mean Absolute Deviation 7 iii .} Ha rrnonic mean 7 iii.) Weighted mean if the weights are 'I .2, 23", [1.6, 2.1, 1 .9, 1.5 respectively 7 iv.) The variance 7 v] The standard deviation 7 Questio For the data given 10, 24, 12, 6, 60, 42, 22, 20 Find n1 i.) The moment coefficient of skewness da Not yet answered Marked out of i.) The moment coefficient of kurtosis a 4 4.00 Questio A distribution with kurtosis > 3 (excess kurtosis > 3) is known as n1 O a. Platykurtic Not yet answered O b. Mesokurtic Marked out of 1.00 O c. Normally distributed O d. Leptokurtic Questio A normal distribution with kurtosis being equal to 3 (excess=0) is know as n1 Not yet O a. Normally distributed answered O b. Platykurtic Marked out of 1.00 O c. Mesokurtic O d. LeptokuticQuestio 111 Not yet answered Marked out of 'I.E|| Which of the statements helovr is not true for the standard deviation of a nu antitative varia ole? O a. The standard deviation of a set of values is equal to 0 if and onlyr if all the values are the same CI h. Standard deviation is alwavs a non-negative value (:3 e. The standard deviation is a measure of how far the values are from the average C) d. If a set of values with mean I] and a standard deviation that is not i] is added a new data point with a value of D it will not affect the standard deviation Questio Which of the following statements is true for the variance of an estimator? n1 Not yet O a. As the sample size decreases the variance does not change answered O b. As the sample size decreases the variance decreases Marked out of 1_00 O c. As the sample size increases the variance increases O d. As the sample size increases the variance decreases Questio What is a stratum? n 1 Not yet 1 A B I E answered Marked out of 2_00 Questio Calculate the arithmetic mean of the following set of data n1 10, 15,30, 70, 44, 79 and 83 Not yet answered O a. 38 Marked out of 2_00 O b. 47.29 O c. 44 O d. None of the aboveQuestio Which measure of central tendency will be, suitable to compare heights of n 1 students in two classes Not yet answered Answer: Marked out of 2.00 Questio Which of the following would indicate that a dataset is not bell-shaped? n 1 Not yet O a. The range is equal to 5 standard deviations. answered O b. The mean is much smaller than the median. Marked out of 200 O c. The range is larger than the interquartile range O d. There are no outliers.Questio Distinguish between descriptive Statistics and inferential Statistics n1 Not yet 1 A B HP answered Marked out of 2.00 Questio 1) Define Statistics. Explain its types, and importance to production , sales n 1 and business. Not yet answered Marked out of 2.00 1 B I HP Questio Calculate the median of the following set of data: n 1 123, 243, 322, 492, 537, 599, 620, 798, 812, 954. Not yet answered O a. 599 Marked out of O b. 550 2.00 O C. 568 O d. None of the aboveQuestio In the same survey, customers are asked to provide their gender: male or n1 female.Indicate the type of data described Not yet answered O a. Discrete Marked out of O b. Nominal 2.00 O c. None of the above O d. ordinal Questio In computing Mean from grouped data, n 1 O a. the grouped data computations are used only when a population is Not yet answered being analyzed Marked out of O b. data values are treated as if they occur at the midpoint of a class 2.00 O c. None of the above answers is correct. O d. the grouped data result is more accurate than the ungrouped result O e. All of the above answers are correct.Questio 111 Not yet answered Marked out of 2.EII:]I Questio 111 Not yet answered Marked out of 2.Ell The reports on quality control and financial accounts issued by the companies are considered under which data source? Q a. Qualitative data Source O h. Secondary data source O c. Continuous data source CI d. Primary data source In the same survey: customers are asked to provide their gender: male or fem ale.|ndioate the type of data described D a. Discrete CI h. None of the above D c. Nominal CI d. ordinal
