Question

1. In a laboratory experiment, students were asked to estimate the breaking strength of wooden stakes. The dimensions of the stakes, measured in inches, were 8 x 1.5 x 1.5. From the experiment, students found the load in pounds needed to break the stakes in a sample of 20 stakes. The class data, measurements of the breaking strength in hundreds of pounds, appear below. 166 161 115 120 159 165 155 151 163 160 156 164 118 152 168 144 166 164 161 160 a. Even though the wooden stakes were nearly identical, did the breaking strengths vary? Explain. Answer: Yes, because the breaking strengths in the first column, all the numbers are different. Only two numbers were repeated two times (161 and 164). In conclusion, even though the wooden stakes were nearly identical, the breaking strengths varied b. Make a stecorlot of these data using the hundreds and tens place as the stems and the ones place as the 'leaf. So, the number 124 would have a stem of 12 and the leaf would be 4. c. Next, make a histogram of these data. Start at 120 and use class intervals of width 10-the first would be 120- 129; 130-139, and so on. Comment on the appearance of the stem plot and the corresponding histogram. Focus of1 258 words

Answer 1

Firstly let me tell you I have solved only question b and c as a is already been solved.