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What are the z score boundaries for the middle 60 percent of the distribution?
The boundaries are ± 0.8416
For a normal distribution what z-score value separates the lowest 10 percent of the scores from the rest of the distribution?
-1.28
What z score separates the lowest 40 percent from the rest of the distribution?
-.25
What Median of a distribution of scores?
The median of a distribution of scores is the middle value when the scores are arranged in ascending or descending order. If there is an odd number of scores, the median is the middle score; if there is an even number, it is the average of the two middle scores. The median is a measure of central tendency that is less affected by outliers than the mean, making it a useful indicator of the typical score in a dataset.
In a standard normal distribution about percent of the scores fall above a z score of 300?
A Z score of 300 is an extremely large number as the z scores very rarely fall above 4 or below -4. About 0 percent of the scores fall above a z score of 300.
What are the z score boundaries for the middle 60 percent of the distribution?
The boundaries are ± 0.8416
What are the z-score boundaries for the middle of 50 percent of the distribution?
50 * * * * * z = -0.67449 to z = +0.67449
What z score values form the boundaries for the middle 60 percent of a normal distribution?
z = - 0.8416 to z = + 0.8416
For a normal distribution what z-score value separates the lowest 10 percent of the scores from the rest of the distribution?
-1.28
What z score separates the lowest 40 percent from the rest of the distribution?
-.25
In a standard normal distribution about percent of the scores fall above a z-score of 3.00?
0.13
The standard z-score such that 80 percent of the distribution is below to the left of this value is?
z = 0.8416
What z-score value separates the highest 40 percent of the scores from the rest of the distribution?
0.2533
What is the probability that a data value in a normal distribution is between a z-score of -1.98 and a z-score of 1.11 Round your answer to the nearest tenth of a percent?
It is 84.3%
Find the z-score for which 92 percent of the distribution's area lies between -z and z?
z = 1.75
In a standard normal distribution about percent of the scores fall above a z score of 300?
A Z score of 300 is an extremely large number as the z scores very rarely fall above 4 or below -4. About 0 percent of the scores fall above a z score of 300.
What z-score for the upper 50 percent of area under the normal curve?
A Z-Score of 0 separates the upper 50% of the area from the lower 50% of the area. A Z-Score of 0 is at the mean, median, and mode of the distribution.
