The height of 10 skeletons (denoted by the variable stature) and the length of the middle metacarpal bone were measured (the metacarpal bones are in the hand between the wrist and fingers). The skeletal height is measured in centimeters and the metacarpal length in millimeters. The scatterplot is given below. 1. Describe what the scatterplot tells you about the direction, form, and strength of the relationship. stature (cm) 180.0 172.5 165.0 157.5+. O 39 45 51 metacarpal size (mm) 2. In this setting, is there a definite explanatory variable and response variable? Justify your answer. 3. Estimate the correlation between metacarpal length and stature. No calculations are necessary. 4. If the height and metacarpal length of the skeletons had been measured in inches, instead of centimeters and millimeters, how would the correlation between stature and metacarpal length for these 10 skeletons have been affected? Explain. 5. One of these skeletons (identified by the X) had a metacarpal size of 52 mm and a height of 183 cm. If the height of this skeleton had been incorrectly recorded as 153 cm, how would the correlation between stature and metacarpal length for these 10 skeletons change?
The height of 10 skeletons (denoted by the variable stature) and the length of the middle metacarpal bone were measured (the metacarpal bones are in the hand between the wrist and fingers). The skeletal height is measured in centimeters and the metacarpal length in millimeters. The scatterplot is given below. 1. Describe what the scatterplot tells you about the direction, form, and strength of the relationship. stature (cm) 180.0 172.5 165.0 157.5+. O 39 45 51 metacarpal size (mm) 2. In this setting, is there a definite explanatory variable and response variable? Justify your answer. 3. Estimate the correlation between metacarpal length and stature. No calculations are necessary. 4. If the height and metacarpal length of the skeletons had been measured in inches, instead of centimeters and millimeters, how would the correlation between stature and metacarpal length for these 10 skeletons have been affected? Explain. 5. One of these skeletons (identified by the X) had a metacarpal size of 52 mm and a height of 183 cm. If the height of this skeleton had been incorrectly recorded as 153 cm, how would the correlation between stature and metacarpal length for these 10 skeletons change?
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
Problem 11P
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