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QlikView Reference Manual.pdf - QlikCommunity - QlikView

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chi2test_df ([set_expression][ total [] col, row,<br />

observed_value [, expected_value] )<br />

returns the aggregated chi2-test df value (degrees of freedom) for one or two series of values iterated over the<br />

chart dimension(s). See the chi2test_p ([set_expression][ total [] col, row, observed_value [,<br />

expected_value]) (page 785) function for argument descriptions.<br />

The same limitations with regard to nested aggregation as those listed under the chi2test_p ([set_expression][<br />

total [] col, row, observed_value [, expected_value]) (page 785) function apply. This function<br />

supports the total qualifier in the same manner as described under the chi2test_p ([set_expression][<br />

total [] col, row, observed_value [, expected_value]) (page 785) function.<br />

Examples:<br />

chi2test_df( Grp, Grade, Count )<br />

chi2test_df( Gender, Description, Observed, Expected )<br />

chi2test_chi2 ([set_expression][ total [] col, row,<br />

observed_value [, expected_value])<br />

returns the aggregated chi2-test value for one or two series of values iterated over the chart dimension(s). See<br />

the chi2test_p ([set_expression][ total [] col, row, observed_value [, expected_value]) (page<br />

785) function for argument descriptions.<br />

The same limitations with regard to nested aggregation as those listed under the chi2test_p ([set_expression][<br />

total [] col, row, observed_value [, expected_value]) (page 785) function apply. This function<br />

supports the total qualifier in the same manner as described under the chi2test_p ([set_expression][<br />

total [] col, row, observed_value [, expected_value]) (page 785) function.<br />

Examples:<br />

chi2test_chi2( Grp, Grade, Count )<br />

chi2test_chi2( Gender, Description, Observed, Expected )<br />

The following eight functions apply to independent samples student's t-tests.<br />

TTest_t ([set_expression][ total [] group, value [, eq_<br />

var = true])<br />

returns the aggregated t value for two independent series of values iterated over the chart dimension(s). The<br />

values should be returned by value and be logically grouped via exactly two values in group. If eq_var is<br />

specified as false, separate variances of the two samples will be assumed, else equal variances between the<br />

samples will be assumed. Text values, null values and missing values in value will result in the function<br />

returning null.<br />

The same limitations with regard to nested aggregation as those listed under the chi2test_p ([set_expression][<br />

total [] col, row, observed_value [, expected_value]) (page 785) function apply. This function<br />

supports the total qualifier in the same manner as described under the chi2test_p ([set_expression][<br />

total [] col, row, observed_value [, expected_value]) (page 785) function.<br />

Examples:<br />

ttest_t( Group, Value )<br />

ttest_t( Group, Value, false )<br />

TTest_df ([set_expression][ total [] group, value [,<br />

eq_var = true])<br />

returns the aggregated student's t-test df value (degrees of freedom) for two independent series of values iterated<br />

over the chart dimension(s). See the TTest_t ([set_expression][ total [] group, value [, eq_<br />

var = true]) (page 786) function for argument descriptions.<br />

786

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