The z score, for a value y, is (y - 18.6)/4
You need the mean and standard deviation in order to calculate the z-score. Neither are given.
A z-score cannot help calculate standard deviation. In fact the very point of z-scores is to remove any contribution from the mean or standard deviation.
It is (124 - 100)/8 = 24/8 = 3
The standard deviation.z-score of a value=(that value minus the mean)/(standard deviation)
z-score of a value=(that value minus the mean)/(standard deviation)
Bob scored 300 or 700.
1.41
You need the mean and standard deviation in order to calculate the z-score. Neither are given.
score of 92
Can someone help me find the answer for a sample n=36 with a population mean of of 76 and a mean of 79.4 with a standard deviation of 18?
A negative Z-Score corresponds to a negative standard deviation, i.e. an observation that is less than the mean, when the standard deviation is normalized so that the standard deviation is zero when the mean is zero.
A z-score cannot help calculate standard deviation. In fact the very point of z-scores is to remove any contribution from the mean or standard deviation.
.The test has a mean, or average, standard score of 100 and a standard deviation of 16 (subtests have a mean of 50 and a standard deviation of 8). The standard deviation indicates how far above or below the norm the subject's score is.
No. The standard deviation is not exactly a value but rather how far a score deviates from the mean.
It is (124 - 100)/8 = 24/8 = 3
The standard deviation.z-score of a value=(that value minus the mean)/(standard deviation)
78