Home theater expansion capable for cinema-like soundâand a seamless home theater designâwhen you combine this product with a center channel speaker and any Direct/ReflectingÂ® speaker system. Magnetically shielded speakers allow for speaker placement in close proximity to your TV without interfering with the picture quality. SyncomÂ® computer tested to ensure one of the highest levels of quality and reliability in the audio industry.
Use the following format to find a z-score: z = X - Î¼ / Ï. This formula allows you to calculate a z-score for any data point in your sample. 1  Remember, a z-score is a measure of how many standard deviations a data point is away from the mean.2  In the formula X represents the figure you want to examine.his will start out the calculations for a z-score. 1  For example, in our sample of tree heights we want to find out how many standard deviations 7.5 is from the mean of 7.9. 2  Therefore, you would perform the following: 7.5 - 7.9.
Note carefully that the sample statistic s is not an unbiased statistic. That is, the mean of the s column in the table (1.257079) is not equal to the population parameter s = 1.632993. Also, if you use the s formula for samples, the resulting statistics are not unbiased estimates for a population parameter.