The distribution of the number of graduate students over the past 13 years in the math department was: 1 69 2 445 3 347 4 0269 5 6 7 3 8 9 What are the smallest number and the largest number of students over the past 13 years? 16 and 49 16 and 73 19 and 73 16 and 90
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
The distribution of the number of graduate students over the past 13 years in the math department was:
| 1 | 69 |
| 2 | 445 |
| 3 | 347 |
| 4 | 0269 |
| 5 | |
| 6 | |
| 7 | 3 |
| 8 | |
| 9 |
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