Answer Happy

Multiple choices: only one choice is correct. (35 pts) 1. The set of input data is given as [ 0.40, 1.45, 2.00, 4.90, 10.05, 14.90). Its corresponding output data is displayed as [ 0.90,3.00, 3.95,9,00_ 20.15, 30.00). What is the correlation coefficient r for the set of six inputs and outputs? (5pts) A) 1 B) 0.9999; C) 0.9995: D) 0.9997: 2. Example 1.2 in the book calculated that the error in the measurement of voltage caused due to low value of input impedance is 20%. To improve the error to 5%, what should be the input impedance in terms of ohm) of the measurement? (5pts) A) 1k ohm B) 2.25k ohm C) 2.5k ohm D) 4.75k ohm 3. A linear potentiometer is a good exam of zero-order instrument. Its step response is proportional to input. Given that its static sensitivity K as 5, the input x is 5, the output y should be _; for a first-order low pass instrument, its step response often has exponential profile. But given that its static sensitivity K as 10, the input x is 5, the steady-state output y should be (5pts) A) 5; 10 B) 10; 20 C) 20:25 D) 25.50