Determine your experiment's expected results. Usually, when scientists conduct an experiment and observe the results, they have an idea of what 'normal' or 'typical' results will look like beforehand. This can be based on past experimental results, trusted sets of observational data, scientific literature, and/or other sources. For your experiment, determine your expected results and express them as a number.
![Statistics Statistics](/uploads/1/2/5/5/125520175/436325737.jpg)
- Example: Let's say prior studies have shown that, nationally, speeding tickets are given more often to red cars than they are to blue cars. Let's say the average results nationally show a 2:1 preference for red cars. We want to find out whether or not the police in our town also demonstrate this bias by analyzing speeding tickets given by our town's police. If we take a random pool of 150 speeding tickets given to either red or blue cars in our town, we would expect 100 to be for red cars and 50 to be for blue cars if our town's police force gives tickets according to the national bias.
How to Calculate a P Value on the TI 83. To get the p-value on a TI 83, run a hypothesis test. Watch the video or read below. Example question:The average wait time to see an E.R. Doctor is said to be 150 minutes. You think the wait time is actually less.
Home / Financial Calculators / Present Value Calculator
This present value calculator can be used to calculate the present value of a certain amount of money in the future or periodical annuity payments.
Present Value of Future Money
ResultsPresent Value: $558.39 Total Interest: $441.61 |
Present Value of Periodical Deposits
ResultsPresent Value: $736.01
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Schedule
start principal | start balance | interest | end balance | end principal | |
1 | $0.00 | $0.00 | $0.00 | $100.00 | $100.00 |
2 | $100.00 | $100.00 | $6.00 | $206.00 | $200.00 |
3 | $200.00 | $206.00 | $12.36 | $318.36 | $300.00 |
4 | $300.00 | $318.36 | $19.10 | $437.46 | $400.00 |
5 | $400.00 | $437.46 | $26.25 | $563.71 | $500.00 |
6 | $500.00 | $563.71 | $33.82 | $697.53 | $600.00 |
7 | $600.00 | $697.53 | $41.85 | $839.38 | $700.00 |
8 | $700.00 | $839.38 | $50.36 | $989.75 | $800.00 |
9 | $800.00 | $989.75 | $59.38 | $1,149.13 | $900.00 |
10 | $900.00 | $1,149.13 | $68.95 | $1,318.08 | $1,000.00 |
![Statistics Statistics](/uploads/1/2/5/5/125520175/436325737.jpg)
Present Value
PV is defined as the value in the present of a sum of money, in contrast to a different value it will have in the future due to it being invested and compound at a certain rate.
Net Present Value
A popular concept in finance is the idea of net present value, more commonly known as NPV. It is important to make the distinction between PV and NPV; while the former is usually associated with learning broad financial concepts and financial calculators, the later generally has more practical uses in everyday life. NPV is a common metric used in financial analysis and accounting; examples include the calculation of capital expenditure or depreciation. The difference between the two is that while PV represents the present value of a sum of money or cash flow, NPV represents the net of all cash inflows and all cash outflows, similar to how the net income of a business after revenue and expenses, or how net benefit is found after evaluating the pros and cons to doing something. The inclusion of the word 'net' denotes the combination of positive and negative values for a figure.
The Time Value of Money
PV (along with FV, I/Y, N, and PMT) is an important element in the time value of money, which forms the backbone of finance. There can be no such things as mortgages, auto loans, or credit cards without PV.
To learn more about or do calculations on future value instead, feel free to pop on over to our Future Value Calculator. For a brief, educational introduction to finance and the time value of money, please visit our Finance Calculator.