It would depend. If my IQ had a z-score of 4 I would be thrilled because it would imply that my IQ was higher than about 99.997% of the population. Of course, on the other hand, I'd be skeptical of that because I've never given any indication of being that smart.
I suppose that's what you're getting at: a z-score this high is darned unusual.
The z score, for a value y, is (y - 18.6)/4
nobody knows
zero you dubass
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.
The Z-score is just the score. The Z-test uses the Z-score to compare to the critical value. That is then used to establish if the null hypothesis is refused.
To find the z-score where 8% of the distribution's area lies between -z and z, we first recognize that this means 4% (or 0.04) lies in each tail of the normal distribution. Therefore, we need to find the z-score that corresponds to the cumulative area of 0.04 in the left tail. Using standard normal distribution tables or a calculator, we find that the z-score for 0.04 is approximately -1.75. Thus, the positive z-score is approximately 1.75, meaning z ≈ 1.75.
what is the z score for 0.75
z score = (test score - mean score)/SD z score = (87-81.1)/11.06z score = 5.9/11.06z score = .533You can use a z-score chart to calculate the probability from there.
Yes a Z score can be 5.
If the Z Score of a test is equal to zero then the raw score of the test is equal to the mean. Z Score = (Raw Score - Mean Score) / Standard Deviation
Find the Z score that correspond to P25
A z-score is a linear transformation. There is nothing to "prove".