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Question: question 2 d...

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Question 2 d
Math 224 Work 3 Name 2.3 Numerical Measures of Central Tendency: 2.4 Numerical Measures of Variability Sectionol Banner IID 1. Calculate the mean (R), median (m), and mode (or modes) for the following sample. a 7,-2,3,3,o,4 343 S 142.3- 3 2. In one of classes of Professor C, there are 25 students, one test scores are listed below 725 53 79 87 6 79 82 76 472 1 a) Find the mean (that is the test average). Write down the formula first. b) Find the median, explain the meaning of the result Me 12 c) Find the sample variance (write the expression in detail and you may use 伈3-(0不레)(11-la% , 24)2(19.log.zy) (vz.log, 24 )1 (%-Оу,очу 177-4, Ly): (ty.lr.24)2 ( 3.41.24)zc79.43.24);(47-uǐM)ǐ 224.271 5 14.98 Find the sample standard deviation. Write down the formula you used and show your work. d)
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