Texas Instruments TI-84 PLUS SILV Guidebook - Page 247
Test and Interval Output Variables, Observed Matrix
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Input n1 n2 C-Level Observed (Matrix) Expected (Matrix) df Xlist, Ylist RegEQ Description The count of observations in sample one for the 2-PropZTest and 2-PropZInt. Must be an integer > 0. The count of observations in sample two for the 2-PropZTest and 2-PropZInt. Must be an integer > 0. The confidence level for the interval instructions. Must be , 0 and < 100. If it is , 1, it is assumed to be given as a percent and is divided by 100. Default=0.95. The matrix name that represents the columns and rows for the observed values of a two-way table of counts for the c2-Test and c2GOF-Test. Observed must contain all integers | 0. Matrix dimensions must be at least 2×2. The matrix name that specifies where the expected values should be stored. Expected is created upon successful completion of the c2-Test and c2GOF-Test. df (degree of freedom) represents (number of sample categories) - (number of estimated parameters for the selected distribution + 1). The names of the lists containing the data for LinRegTTest and LinRegTInt. Defaults are L1 and L2, respectively. The dimensions of Xlist and Ylist must be the same. The prompt for the name of the Y= variable where the calculated regression equation is to be stored. If a Y= variable is specified, that equation is automatically selected (turned on). The default is to store the regression equation to the RegEQ variable only. Test and Interval Output Variables The inferential statistics variables are calculated as indicated below. To access these variables for use in expressions, press 5 (5:Statistics), and then select the VARS menu listed in the last column below. Variables p-value test statistics degrees of freedom sample mean of x values for sample 1 and sample 2 sample standard deviation of x for sample 1 and sample 2 number of data points for sample 1 and sample 2 pooled standard deviation Tests p z, t, c2, Ü df v1, v2 Sx1, Sx2 n1, n2 SxP Intervals df v1, v2 Sx1, Sx2 n1, n2 SxP LinRegTTest, ANOVA p t, Ü df SxP VARS Menu TEST TEST TEST TEST TEST TEST TEST Chapter 13: Inferential Statistics and Distributions 240