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.
Using formula 2 gives us z = (105.8-120)/7 = -2.03, rounded to 2 significant digits to the right of the decimal point. The value of z = -2.03 means that the sample value x = 105.8 is approximately 2.03 standard deviations to the left of the sample mean. For a sample value of x = 129.2, we find, in the same way, z = 1.31, approximately.