Guestimate the length and size of the angle Essays

Guestimate the length and size of the angle Essays Guestimate the length and size of the angle Essay Guestimate the length and size of the angle Essay 7, 8, 8, 9, 10, 10, 10 The range of sample 2s estimates of the length = 10-2= 8 The Median = 5+5 /2 =5 The Mode = 5 The Mean = cumulative estimates (163.5) divided by total number of estimates (30) = 5.45 = 6 The 30 estimated lengths (in cm) are as follows (taken from sample 3-people who do not wear spectacles): 2, 2, 2.5, 3, 3, 3, 3, 3, 3.5, 3.5, 4, 4, 4, 4, 4, 4, 4.5, 4.5, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 9 The range of sample 3s estimates of the length = 10-2= 8 The Median = 4+4 /2 =4 The Mode = 4 The Mean = cumulative estimates (136.5) divided by total number of estimates (30) = 4.55 = 5 The 30 estimated angles ( oC) are as follows (taken from sample 2 -people who wear spectacles): 30, 30, 35, 35, 37, 38, 39, 40, 40, 42, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 50, 50, 55, 55, 60, 62, 65, 65 The range of sample 1s estimates of the angle = 65-30 = 30 The Median angle = =45+45 / 2 =45 The Mode angle = 45 The Mean = cumulative estimates (1303) divided by total number of estimates (30) = 43.43 = 43 The 30 estimated angles ( oC) are as follows (taken from sample 3-people who do not wear spectacles): 20, 26, 30, 30, 35, 40, 43, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 46, 49, 50, 52, 55 The range of sample 1s estimates of the angle = 55-20 = 35 The Median angle = =45+45 / 2 =45 The Mode angle = 45 The Mean = cumulative estimates (1286) divided by total number of estimates (30) = 42.86 = 43 6.2 Pie charts These pie charts, which are not drawn to scale, show the distribution of estimates by people who part of the investigation. Pie chart representing percentages of 30 peoples (wearing spectacles) estimates of the length [image028.gif] [image010.gif] 6 cm 4.4 cm 2 cm 9 cm 10 cm 8 cm 7 cm [image030.gif] *Note: Any estimates with a value of zero are not represented in this chart The mode estimate for the both these pie charts are represented by the largest portion Pie chart representing percentages of 30 peoples ( not wearing spectacles) estimates of the length 7 cm 9 cm 6 cm 5 cm 4.5 cm 3 cm 4 cm 3.5 cm 2.5 cm cm 2 cm [image032.gif] Pie chart representing percentages of 30 peoples (wearing spectacles) estimates of the Angle [image034.gif] *Note: The mode estimate for the both these pie charts are represented by the largest portion Pie chart representing percentages of 30 peoples (not wearing spectacles) estimates of the angle [image032.gif] This frequency diagram shows the distribution of estimates of the length [image036.gif] This frequency diagram shows the distribution of estimates of the angle [image038.gif]