If you deposit $6,000 into an account paying 4% per year, compounded semiannually, how much do you have in the account in 20 years?
Answer(s): A
On the BAII Plus, press 40 N, 4 divide 2 = I/Y, 6000 PV, 0 PMT, CPT FV. On the HP12C, press 40 n, 4 ENTER 2 divide i, 6000 PV, 0 PMT, FV. Note that the answer will be displayed as a negative number. Make sure the BAII Plus has the value of P/Y set to 1.
What disadvantage(s) are there of the mean deviation?
Answer(s): E
Using absolute values can cause problems since they are difficult to work with.
In a stratified random sampling method,
Answer(s): B
The population is divided into strata or subcategories and a sample is randomly selected from each strata.
Ten experts rated a newly developed chocolate chip cookie on a scale of 1 to 50. Their ratings were: 34, 35, 41, 28, 26, 29, 32, 36, 38 and 40. What is the mean deviation?
The mean is 33.9. The mean deviation is the absolute values of the deviation from the mean. (0.1 + 1.1 + 7.1 + 5.9 + 7.9 + 4.9 + 1.9 + 2.1 + 4.1 + 6.1)/10 = 41.2/10 = 4.12
Which of the following are formulas for sample variance?
I and III are equivalent and correct; III is the computational formula for sample variance.
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