A sample of the paramedical fees charged by clinics revealed these amounts: $55, $49, $50, $45, $52 and $55.What is the median charge?
Answer(s): B
Order them: 45,49,50,52,55,55. The median is therefore (50 + 52)/2 = 51
A sample of 10 observations is drawn from a population with mean 17. The mean of the observations equals 14.3 and the sample standard deviation equals 4.8. The sampling error in mean equals ________.
"Sampling error" refers to the difference between a sample statistic and the corresponding population parameter. In this case, the sampling error equals 14.3 - 17 = -2.7.
What is the present value today of these annual cash flows: $3,000, $2,000, $1,000? Assume the first cash flow occurs 1 year from today and an interest rate of 10% per year, compounded annually.
You could solve this question using 3 different compound interest problems, but it is easier to solve them using the calculator's cash flow functions. On the BAII Plus, press CF 2nd CLRWork 0 ENTER DownArrow 3000 ENTER DownArrow DownArrow 2000 ENTER DownArrow DownArrow 1000 ENTER DownArrow DownArrow 2nd Quit. Then press NPV 10 ENTER DownArrow CPT. On the HP12C, press these keys: 0 BlueShift CFo 3000 BlueShift CFj 2000 BlueShift CFj 1000 BlueShift CFj. Then press 10 i, YellowShift NPV. The "DownArrow" represents the downward-pointing arrow on the top row of the BAII Plus keyboard. Make sure that the BAII Plus has the P/Y value set to 1.
A stock has the following returns over 3 years: -10%, +15%, +25%. The annual geometric rate of return over the 3 years is ________.
Answer(s): H
The annual geometric rate of return equals [(1-10%)(1+15%)(1+25%)]^(1/3) - 1 = (0.9 * 1.15 * 1.25)^0.33 - 1 = 0.0896 = 8.96%
Monthly commissions of first-year insurance brokers are $1,270, $1,310, $1,680, $1,380, $1,410, $1,570, $1,180 and $1,420. These figures are referred to as:
Data or observations that have not been organized in any form are called raw data.
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question: 128 d is the wrong answer...should be c
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