Two main methods are used to estimate the number of jelly beans in a jar, including mathematical formulas for volume and statistical estimation by counting the number of candies in a similar jar. An easy way to estimate the beans is to count the height and diameter of the jar in beans, and then input those numbers into a volume calculation for round cylinders.Know More
The volume formula for a cylinder is V = pi x r^2 x h. One suggestion for using this formula involves rounding pi to 3 and counting the radius as half of the jar's diameter in beans. For example, if a jar is 10 beans in diameter and 20 beans in height, the volume is three times 5 squared times 20, or 3 times 25 times 20. The answer is approximately 1,500 beans.
Estimate the number of jelly beans by taking statistical samples. Obtain the exact same jar with jelly beans of the same size. Count jelly beans into the jar, up to the exact level of jelly beans, several times to get an average. For instance, it could be that over six different counts there are 587, 579, 593, 579, 591 and 585 jelly beans. This averages out to an estimate of 586 jelly beans in the jar.Learn more about Statistics
A Z-test is commonly used in statistics to determine whether a given hypothesis is true in a normal distribution or bell curve. Z-tests are optimal for sample sizes of 30 or greater, while student t-tests are best used for lower sample sizes.Full Answer >
The coefficient of variation is used in statistics to measure distribution. It can be found from the ratio of the standard deviation over the mean of a set of numbers to calculate both probability and frequency. When it is used in finance, the mean is considered the expected return.Full Answer >
Statistics in computer science are used for a number of things, including data mining, data compression and speech recognition. Other areas where statistics are use in computer science include vision and image analysis, artificial intelligence and network and traffic modeling.Full Answer >
Cumulative probability is used in statistics to determine the probability of a particular outcome given the previous outcomes of the same problem with the same variables. For example, cumulative probability can be used to determine the probability that a coin flipped 10 times comes up twice as tails.Full Answer >