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What percent of the observations in a distribution lie between the first quartile and the third quartile?
Janika3689
50%
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∙ 11y ago
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What percent falls below the mean for normal distribution?
In a normal distribution half (50%) of the distribution falls below (to the left of) the mean.
In a standard normal distribution what z value corresponds to 17 percent of the data between the mean and z value?
z = ±0.44
What percent of data falls between 1 Standard deviation below and 2 stand deviations above the mean?
The answer will depend on what the distribution is. Non-statisticians often assum that the variable that they are interested in follows the Standard Normal distribution. This assumption must be justified. If that is the case then the answer is 81.9%
What z-score value separates the highest 40 percent of the scores from the rest of the distribution?
0.2533
What is the middle 95 percent of students who drink five beers with a standard deviation of 01 and a mean of 07?
Not possible to tell you without knowing how many students' there are, and what distribution you wish to use (i.e normal distribution, t-distribution etc...)
What percent of observations are above the third quartile in a distribution?
25 percent
How do you find the population mean for a 95 percent confidence interval?
It depends whether or not the observations are independent and on the distribution of the variable that is being measured or the sample size. You cannot simply assume that the observations are independent and that the distribution is Gaussian (Normal).
Will the quartile always be 25 percent 50 percent and 75 percent?
Yes. The prefix "quart" is derived from the word for 4, so quartile always means splitting the data into 4 sections, ie. 25%, 50%, 75%, 100%.
Find the percent of the area between the mean and 0.83 deviations from the mean?
It depends on the underlying distribution.
What is the gender distribution in biostatistics?
the gender distribution is 77 percent men and 25 percent women
Find the z-score for which 92 percent of the distribution's area lies between -z and z?
z = 1.75
What is the fortieth percentile?
It is the value of the variable such that 40 percent of observations are smaller and 60 percent are larger.
What is limit of cable run between a secondary distribution center and a power distribution panel if wanting to keep voltage drop below 10 percent for the facility being energized?
150 feet
Is the cummulative frequency distribution a relative frequency distribution expressed in absolute numbers?
in form of percent
What percent falls below the mean for normal distribution?
In a normal distribution half (50%) of the distribution falls below (to the left of) the mean.
What is the above 25 percent quartile?
A range of data is split into 4 parts.0-25%25-50%50-75%75%-100%being above the 25% quartile means that 25% of all tested or categorized subjects are below the person in question.
How do you determine the lowest quartile of a series of numbers?
Rank them from highest to lowest. The lowest 25 percent of them represent the bottom quartile. Let's say you have the following data set: 1, 8, 2, 7, 3, 6, 4, 5 Rank them thus: 1, 2, 3, 4, 5, 6, 7, 8 Twenty-five percent of eight (the number of data points) is two. Therefore, the bottom two data points (1 and 2) represent the bottom quartile.
