MITMW - KEEP - OR- GIVE - 4.1 - 4.2.pptx

MATH IN THE MODERN WORLD CHAPTER 4

1. KEEP or GIVE? MATHEMATICS IN THE MODERN WORLD

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3. We will consider three types of average, known as the arithmetic mean , the median , and the mode . Each of these averages is a measure of central tendency for the numerical data. TRUE

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5. +10

6. 2

7. What is the mode of the given data: 118, 105, 110, 118, 134, 155, 166, 166, 180 118 & 166

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9. -1

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11. TRUE Any list of numbers that is arranged in numerical order from smallest to largest or largest to smallest is a ranked list.

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13. -5

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15. What is the median of the given data: 2, 7, 5, 7, 14 7

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17. +1

18. 5

19. 120 Solve for ∑ │x - │ :  

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21. -5

22. 6

23. TRUE The traditional symbol used to indicate a summation is the Greek letter sigma, ∑.

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25. -10

26. 7

27. What is the mean of the given data: 11, 8, 3, 6 , 7

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29. -10

30. 8

31. The range of a set of data value is the difference between the greatest data value and the least data value TRUE

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33. -5

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35. 5.6 Solve for Mean Deviation :

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37. +5

38. 10

39. FALSE-arithmetic mean The arithmetic median is the most commonly used measure of central tendency.

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41. -2

42. 11

43. Find the range of the given data: 80, 86, 87, 90, 95 15

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45. +5

46. 12

47. 34 Solve for Range :

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49. +4

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51. BONUS

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53. +4

54. 14

55. 4 Solve for Mean Deviation :

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57. +3

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59. TRUE The median is the middle number or the mean of the two middle numbers in a list of numbers that have been arranged in numerical order from smallest to largest or largest to smallest.

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61. -3

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63. TRUE Mean =  

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65. -3

66. 17

67. BONUS

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69. +2

70. 18

71. 4.7 Solve for Mean Deviation :

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73. -4

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75. TRUE The mean deviation measures the average deviation of the values from the arithmetic mean. It gives equal weight to the deviation of every observation.

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77. -4

78. 20

79. BONUS

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81. +4

82. 21

83. TRUE Mean Deviation for Ungrouped Data (For a Sample) M.D. = Σ|x - x|/n

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85. -1

86. 23

87. TRUE The mean, the median, and the mode are all averages; however, they are generally not equal.

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89. +1

90. 22

91. FALSE-Mode Formula for Grouped Data Mean Formula for G rouped Data:

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93. +5

94. 24

95. TRUE

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97. +3

98. 25

99. BONUS

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101. +10

102. 26

103. TRUE The mode of a list of numbers is the number that occurs most frequently.

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105. +10

106. 27

107. BONUS

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109. +1

110. 28

111. BONUS

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113. +5

114. 29

115. FALSE-Median Formula for Grouped Data Median Formula for Ungrouped Data:

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117. -3

118. 30

119. 30 Solve for ∑ │x - │ :  

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121. -10

122. 31

123. 60 Solve for ∑ │x - │ :  

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125. -2

126. 32

127. FALSE-mean The arithmetic mean of a set of numbers is often referred to as simply the mode.

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129. +1