Cirrus-logic CDB5464U Manual do Utilizador descarregar pdf (Página 23)

CDB5464U

DS847DB1 23

2.8.11.3 MEAN

Indicates the mean of the data sample set. The mean is calculated using the following formula:

2.8.11.4 STD_DEV

Indicates the standard deviation of the collected data set. The standard deviation is calculated using the

following formula:

2.8.11.5 VARIANCE

Indicates for the variance of the current data set. The variance is calculated using the following formula:

2.8.11.6 MAXIMUM

Indicates the maximum value of the collected data set.

2.8.11.7 MINIMUM

Indicates the minimum value of the collected data set.

Mean

Xi

i0=

n1–

∑

n

----------------=

STDDEV

Xi

MEAN

–

()

2

i0=

n1–

∑

n

------------------------------------------------

=

VARIANCE

Xi

MEAN

–

()

2

i0=

n1–

∑

n

------------------------------------------------=

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CDB5464U 1

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