31 Dec 1.33 Identify each of the following as examples of
1.33 Identify each of the following as examples of (1) attribute (qualitative) or (2) numerical (quantitative) variables: a. The breaking strength of a given type of string b. The hair color of children auditioning for the musical Annie c. The number of stop signs in towns of fewer than 500 people d. Whether or not a faucet is defective 14 Chapter 1 Statistics Table for Exercise 1.31 Engine Size Engine Size, Manufacturer Model Drive (no. cylinders) Displacement (liters) Transmission City MPG Hwy MPG CHEVROLET COLORADO 2WD 4 2.9 Manual 18 24 GMC CANYON 2WD 5 3.7 Auto 17 23 HUMMER H3T 4WD 8 5.3 Auto 13 16 MITSUBISHI RAIDER 4WD 8 4.7 Auto 9 12 SUZUKI EQUATOR 2WD 4 2.5 Auto 17 22 TOYOTA TACOMA 4WD 6 4.0 Manual 14 19 Source: http://www.mpgomatic.com/2009/ Within a set of measurement data, we always expect variation. If little or no variation is found, we would guess that the measuring device is not calibrated with a small enough unit. For example, we take a carton of a favorite candy bar and weigh each bar individually.We observe that each of the 24 candy bars weighs 7/8 1.2 Measurability and Variability e. The number of questions answered correctly on a standardized test f. The length of time required to answer a telephone call at a certain real estate office
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