$1.$ Record your resting pulse first thing in the morning for five days. Compute the standard deviation for these $5$ data points. What does the variation you observe tell you?

$2.$ Download the Compound Interest Exercise fall $24$ Excel file posted on Canvas session $1$ August $26.$ Go to the Future and Present Value tab.

a$.$ Suppose you are deciding on how much to spend on a car. You$$re torn between two cars, one is $$10,000$ more than the other. Let$$s ignore the difference in quality, resale value, costs of operation and repair or loans for now. Using this $$10,000$ difference let$$s assume you choose to buy the less expensive car and invest this amount instead in the stock market. Let$$s assume further you earn on average $10\%$ return with a $3\%$ inflation rate over a $46-$year period $($for many of you about the time you might retire$)$ and you never contribute to this account again. Use the template on this tab to compute the Future Value $($FV$)$ and Present Value $($PV$)$ of this investment. This template uses an annual rate of compounding interest which is a conservative estimate of FV and PV$.$

b$.$ Suppose we are deciding whether to buy coffee at coffeeshop on our way to work or make coffee at home and bring it to work. The difference in cost is $$3$ per day. Let$$s assume we work five days a week $52$ week per year, so the difference amounts to $$780$ per year. Like in part a assume a $10\%$ rate of return, $3\%$ inflation rate over a $46-$year period. Let$$s further assume you make your contribution to your stock brokerage account once a year. Note here the initial investment will be $$0$ but the yearly investment will be $$780($this implies the contribution comes at the end of the year as you$$ve accumulated your savings over the year$).$ Use the template on this tab to compute the Future Value $($FV$)$ and Present Value $($PV$)$ of this investment. This template uses an annual rate of compounding interest which is a conservative estimate of FV and PV$.$