1-2. For the following variables, determine whether the data are measured on an interval or ratio scale.

(a) X: attendance at last night’s concert

(b) X: cost of parking your car at the local civic center

(c) X: capacity of your vehicle’s gas tank

(d) X: melting point (in degrees Celsius) of a lead ingot

(e) X: national unemployment rate

(f) X: IQ scores of your age cohort

(g) X: LSAT scores for college seniors

(h) X: interest rate on new car loans at the local credit union