Grip is applied to produce normal surface forces thatcompress the object being gripped. Examples includetwo people shaking hands, or a nurse squeezing apatient’s forearm to stop bleeding. The article“Investigation of Grip Force, Normal Force, ContactArea, Hand Size, and Handle Size for CylindricalHandles” (Human Factors, 2008: 734–744) includedthe following data on grip strength (N) for a sample of 42individuals:16 18 18 26 33 41 54 56 66 68 87 91 9598 106 109 111 118 127 127 135 145 147 149 151 168172 183 189 190 200 210 220 229 230 233 238 244 259294 329 403a. Construct a stem-and-leaf display based on repeatingeach stem value twice, and comment on interestingfeatures.b. Determine the values of the fourths and thefourthspread.c. Construct a boxplot based on the five-number summary,and comment on its features.d. How large or small does an observation have to be toqualify as an outlier? An extreme outlier? Are thereany outliers?e. By how much could the observation 403, currentlythe largest, be decreased without affecting fs?
Grip is applied to produce normal surface forces that
compress the object being gripped. Examples include
two people shaking hands, or a nurse squeezing a
patient’s forearm to stop bleeding. The article
“Investigation of Grip Force, Normal Force, Contact
Area, Hand Size, and Handle Size for Cylindrical
Handles” (Human Factors, 2008: 734–744) included
the following data on grip strength (N) for a sample of 42
individuals:
16 18 18 26 33 41 54 56 66 68 87 91 95
98 106 109 111 118 127 127 135 145 147 149 151 168
172 183 189 190 200 210 220 229 230 233 238 244 259
294 329 403
a. Construct a stem-and-leaf display based on repeating
each stem value twice, and comment on interesting
features.
b. Determine the values of the fourths and the
fourthspread.
c. Construct a boxplot based on the five-number summary,
and comment on its features.
d. How large or small does an observation have to be to
qualify as an outlier? An extreme outlier? Are there
any outliers?
e. By how much could the observation 403, currently
the largest, be decreased without affecting fs?
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