Array Statistics Detail

If you have added a slice, these statistics describe only the information currently being displayed; they do not describe the entire array. For example, if an array includes positive values, but a slice omits array values that are more than 0, the median value is negative even though the entire array’s real median value is more than 0.

Count

The total number of displayed array values. If you’re displaying a floating-point array, this number doesn’t include NaN or Infinity values.

Zero Count

The number of elements whose value is 0.

Sum

The sum of all the displayed array’s values.

Minimum

The smallest array value.

Maximum

The largest array value.

Median

The middle value. Half of the array’s values are less than the median, and half are greater than the median.

Mean

The average value of array elements.

Standard Deviation

The standard deviation for the array’s values.

Quartiles, First and Third

Either the 25th or 75th percentile values. The first quartile value means that 25% of the array’s values are less than this value and 75% are greater than this value. In contrast, the third quartile value means that 75% of the array’s values are less than this value and 25% are greater.

Lower Adjacent Value

This value provides an estimate of the lower limit of the distribution. Values below this limit are called outliers. The lower adjacent value is the first quartile value minus the value of 1.5 times the difference between the first and third quartiles.

Upper Adjacent Value

This value provides an estimate of the upper limit of the distribution. Values above this limit are called outliers. The upper adjacent value is the third quartile value plus the value of 1.5 times the difference between the first and third quartiles.

Denormalized Count

A count of the number of denormalized values found in a floating-point array. This includes both negative and positive denormalized values as defined in the IEEE floating-point standard. Unlike other floating-point statistics, these elements participate in the statistical calculations.

Infinity Count

A count of the number of infinity values found in a floating-point array. This includes both negative and positive infinity as defined in the IEEE floating-point standard. These elements do not participate in statistical calculations.

NaN Count

A count of the number of NaN (not a number) values found in a floating-point array. This includes both signaling and quiet NaNs as defined in the IEEE floating-point standard. These elements do not participate in statistical calculations.

Checksum

A checksum value for the array elements.