Correlation coefficient and coefficient of determination
If we increase the size of our sample, for ex. the pairs of data that we collect. Will this affect linear correlation coefficient and coefficient of determination? Please explain.
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A galvanic cell (Zn/Zn2+ // Zn2+/Zn) was connected to a DC power supply with Current of 1.25 x 10^-2 A for 1.15 hours. Calculate how many mg Zn will attach to the cathode theoretically?
The difference in pathlength traveled by the incoming and outgoing rays from a diffraction grating is 750 nm. If there was third order diffraction, at what wavelength would constructive interference occur?
Let T be an exponential random variable for the failure of the screen for a television set, with a mean time to failure of 10,000 hours. If the set is operated an average of 6 hours per day:
Calculate the air flow rate for stoichiometric combustion. If the engine is operating at 1500 rev/min, estimate the mass of fuel and air entering each cylinder per cycle.
What is the magnitude and sign of the molar heat of vaporization of butane? Explain your reasoning using Hess's Law. is your sign for the heat of vaporization realistic? Explain.
Before developing the dead-weight gauge, he worked in a mine shaft, and used a mercury manometer for measurements of pressure to more than 400 bar. Estimate the height of the manometer required.
The vessel is placed at time t=0 into a thermal reservoir with constant temperature T_res=50 degrees C. How much heat must be transferred into the glass vessel to turn all the water into a saturated vapor>
What should be the concentration of the sodium thiosulfate solution in order that each mL of the solution correspond to exactly 10 mg of the hydrogen peroxide solution?
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