If a marble is drawn from the jar at random, what is the probability that this marble is red? The number of events is 5 (since there are 5 red marbles), and the number of outcomes is 20. Example 2: A jar contains 4 blue marbles, 5 red marbles and 11 white marbles.You could also express this as 0.285 or 28.5%. Example 1: What is the likelihood of choosing a day that falls on the weekend when randomly picking a day of the week? The number of events is 2 (since 2 days out of the week are weekends), and the number of outcomes is 7.Here's how you find the probability of our remaining examples: X Research source X Expert Source Mario Banuelos, PhDĪssistant Professor of Mathematics Expert Interview. You can also express this relationship as 1 ÷ 6, 1/6, 0.166, or 16.6%. In the case of rolling a 3 on a die, the number of events is 1 (there’s only a single 3 on each die), and the number of outcomes is 6. This will give us the probability of a single event occurring. If a marble is drawn from the jar at random, what is the probability that this marble is red? "Choosing a red marble" is our event, and the number of outcomes is the total number of marbles in the jar, 20.ĭivide the number of events by the number of possible outcomes. Example 1: What is the likelihood of choosing a day that falls on the weekend when randomly picking a day of the week? "Choosing a day that falls on the weekend" is our event, and the number of outcomes is the total number of days in a week: 7.Here are 2 more examples to help you get oriented: ![]() So, we know that in this case, there are 6 possible events and 1 outcome whose probability we’re interested in calculating. “Rolling a 3” is the event, and since we know that a 6-sided die can land any one of 6 numbers, the number of outcomes is 6. Let’s say you're trying to find the likelihood of rolling a 3 on a 6-sided die. N, mean and sum of squares of the sample set.Ĭalculate the percentage weight of two or three numbers that make up a total sum of the sample set.Ĭalculate the z-score using one of three methods including for a set of data.Define all possible events and outcomes that can occur. Calculator performs addition or summation to compute the total amount of entered data set.Ĭalculate variance, standard deviation and variables needed to calculate variance including sample size Generate one or more random numbers or random letter sets from a range of numbers or letters.Ĭalculate the standard deviation and variance for a set of data.įormulas include the basic descriptive statistics to calculate the minimum, maximum, range, sum, count, mean, median, mode, standard deviation, variance, midrange, percentiles, quartiles, outliers, sum of squares, mean deviation, absolute deviation, root mean square, standard error of the mean, skewness, kurtosis, kurtosis excess, and coefficient of variation.Ĭreate stem and leaf plots, or stemplots, for sets of data values and calculate basic statistics including the minimum, maximum, sum, count, mean, median, mode, standard deviation and variance.Ĭalculate the sum of a set of numbers. Pick a randomly generated number between 1 and 100. Pick a randomly generated number between 1 and 10. Generate one or more random numbers from a custom range of numbers you select with or without repeats and sorting. Sort a list of names or generate multiple picks with repeats. Randomly pick a name or multiple names from a list. \ĭraw 1 to 52 cards randomly from a shuffled deck of playing cards. PIN numbers of 1 to 100 digits long with or without repeats. Mean = sum of data / number of data valuesĬalculate the statistical mean, median and mode for a set of data.Ĭonvert "odds of winning" an event into a percentage chance of success.Ĭalculate any percentile and get a table of every 5th percentile for a given data set.Ĭalculate first, second and third quartiles, the interquartile range, and minimum and maximum for a data set. Calculate the minimum, maximum, range, sum, count, mean, median, mode, standard deviation, variance, midrange, quartiles, sum of squares, mean deviation, absolute deviation, root mean square, standard error of the mean, skewness, kurtosis, coefficient of variation and frequency for a set of data.Ĭalculate the grade you need on the final exam to get a desired grade for the course.Ĭalculate grade point average and cumulative grade point averages.Ĭalculate the mean of a set of data. Average is the same as mean.Īverage = sum of data / number of data valuesĬalculate the minimum, maximum, sum, count, mean, median, mode, standard deviation and variance for a data set.Ĭalculations include the basic descriptive statistics plus additional values.
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