3 mean, 4 std_dev, 5 variance – Cirrus Logic CDB5464U User Manual

Page 23: 6 maximum, 7 minimum, Cdb5464u

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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

i

0

=

n

1

–

∑

n

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

=

STDDEV

Xi

MEAN

–

(

)

2

i

0

=

n

1

–

∑

n

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

=

VARIANCE

Xi

MEAN

–

(

)

2

i

0

=

n

1

–

∑

n

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

=