QlikView Reference Manual.pdf - QlikCommunity - QlikView

TTest1w_upper (weight, value [, sig = 0.025 ])
returns the aggregated value for the upper end of the confidence interval for a series of values iterated over a
number of records as defined by a group by clause. See the TTest1w_t (weight, value) (page 299) and
TTest1w_conf ( weight, value [, sig = 0.025 ]) (page 300) functions for argument descriptions.
Example:
Load Year, ttest1w_upper(Weight, Value) as X from abc.csv group by
Year;
The following five functions apply to z-tests.
ZTest_z (value [, sigma])
returns the aggregated z value for a series of values iterated over a number of records as defined by a group
by clause. The values should be returned by value. A population mean of 0 is assumed. If you want the test
to be performed around another mean, subtract that value from the sample values. If known, the standard
deviation can be stated in sigma. If sigma is omitted the actual sample standard deviation will be used. Text
values, null values and missing values in value will result in the function returning null.
Example:
Load Year, ztest_z(Value-TestValue) as X from abc.csv group by Year;
ZTest_sig (value [, sigma])
returns the aggregated z-test 2-tailed level of significance for a series of values iterated over a number of records
as defined by a group by clause. See the ZTest_z (value [, sigma]) (page 301) function for argument
descriptions.
returning null.
Example:
Load Year, ztest_sig(Value-TestValue) as X from abc.csv group by Year;
ZTest_dif (value [, sigma])
returns the aggregated z-test mean difference for a series of values iterated over a number of records as
defined by a group by clause. See the ZTest_z (value [, sigma]) (page 301) function for argument descriptions.
returning null.
Example:
Load Year, ztest_dif(Value-TestValue) as X from abc.csv group by Year;
ZTest_sterr (value [, sigma] )
returns the aggregated z-test standard error of the mean difference for a series of values iterated over a
number of records as defined by a group by clause. See the ZTest_z (value [, sigma]) (page 301) function
for argument descriptions.
returning null.
Example:
Load Year, ztest_sterr(Value-TestValue) as X from abc.csv group by
Year;
ZTest_conf (value [, sigma [, sig = 0.025 ])
returns the aggregated z value for a series of values iterated over a number of records as defined by a group
by clause. The two-tailed level of significance can be specified in sig. If omitted sig will be set to 0.025,
301