Question

The Wind Mountain excavation site in New Mexico is an important archaeological location of the ancient Native American Anasazi culture. The following data represent depths (in cm) below surface grade at which significant artifacts were discovered at this site (Reference: A.I. Woosley and A.J. McIntyre, Mimbres Mogollon Archaeology, University of New Mexico Press). 85 45 75 60 90 90 115 30 55 58 78 120 80 65 65 140 65 50 30 125 75 137 80 120 15 45 70 65 50 45 95 70 70 28 40 125 105 75 80 70 90 68 73 75 55 70 95 65 200 75 15 90 46 33 100 65 60 55 85 50 10 68 99 145 45 75 45 95 85 65 65 52 82 For this problem, use seven classes. (a) Find the class width. Incorrect: Your answer is incorrect. (b) Make a frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies, and cumulative frequencies. (Give relative frequencies to 4 decimal places.) Class Limits Class Boundaries Midpoint Frequency Relative Frequency Cumulative Frequency Correct: Your answer is correct. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Correct: Your answer is correct. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. − Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Correct: Your answer is correct. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Correct: Your answer is correct. Correct: Your answer is correct. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Correct: Your answer is correct. Incorrect: Your answer is incorrect. Correct: Your answer is correct. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. Incorrect: Your answer is incorrect. (c) Draw a histogram. Maple Generated Plot Maple Generated Plot Maple Generated Plot Maple Generated Plot Correct: Your answer is correct. (d) Draw a relative-frequency histogram. Maple Generated Plot Maple Generated Plot Maple Generated Plot Maple Generated Plot

Answer 1

Answer:

a) 28

b)

Class Limits  Class Boundaries   Midpoint    f      Rf         Cf

10 - 37            9.5-37.5                   23.5            7     0.096     7      

38 - 65           37.5-65.5                 51.5           25    0.342     32    

66 - 93           65.5-93.5                 79.5          26    0.356     58    

94 -  121        93.5-121.5                   107.5         9     0.123       67    

122 - 149      121.5-149.5                  135.5         5      0.068     72  

150 - 177       149.5-177.5                  163.5        0         0.0      72    

178 - 205       177.5-20.5                  191.5         1       0.014      73  

Total                                                                  73          1.0    

c)

The histogram is in attached file.

Step-by-step explanation:

a)

The width of class interval=range/desired number of classes

The width of class interval=(maximum-minimum)/7

The width of class interval=(200-10)/7

The width of class interval=190/7

The width of class interval=27.14=28 (rounded to next whole number)

Part(b) and part (c) is explained in attached word document.

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