This Test Statistic Calculator calculates the test statistic of either one population mean, comparing two population means, or one population proportion.
Since we have a two-tailed test, the P-value is the probability that a t statistic having 40 degrees of freedom is more extreme than -1.99; that is, less than -1.99 or greater than 1.99. We use the t Distribution Calculator to find P(t < -1.99) is about 0.027.If...
T-Test Calculator Compare the means of two samples using a single-sample or two-sample t-test below. Results: Two-tailed P: Left-tailed P: Right-tailed P: Test Statistic (t): Degrees of Freedom (df): Learn how we calculated thisbelow...
Step 2:Calculate the degree of freedom for a two-sample t-test using the formula =n1+n2-2 = 25 + 25 – 2 = 48. Step 3:As per the distribution table, the critical value at a 90% confidence interval with a degree of freedom of 48 will be1.677. Result: #3 Paired Sample t-Test ...
the sample mean of 011242432014061112and 017551892 is 0.02076634.3 Having obtained the -test statistic using a hand-calculator, we need tables of the F-distribution in order to obtain the corresponding -. The F- distribution is very similar in shape to the Chi-square distribution.4 However, ...
What is the test statistic (T)? What is the P-value? How does the calculator test hypotheses?Sample Problems Calculator | Frequently-Asked Questions Problem 1The table below shows sample data and variance for five groups. How would you test the assumption that variances are equal across groups...
Calculate the test statisticW=b2⁄SS Find the value in Table 2 of theShapiro-Wilk Tables(for a given value ofn) that is closest toW, interpolating if necessary. This is the p-value for the test. For example, supposeW= .975 andn= 10. Based on Table 2 of theShapiro-Wilk Tablesthe...
Use Z-table to find p-value, if the test value for the left sided test is found to be -2.15. - 0.9842 - 0.0158 - 0.0316 - 0.765 P-Value: The p-value is the area of the tail beyond the calculated value of the test statistic. If...
Learn how to calculate the appropriate test statistic and p-value for the Chi-square test for homogeneity, and see examples that walk through sample problems step-by-step for you to improve your statistics knowledge and skills.
2.1) Chi-square statistic The chi-square statistic value is not rendering an accurate result. I compared against the output generated by Real Stat Analysis Tool (ie, Chi-square test for independence) and calculated values using various function s(eg, CHI_STAT) and mathematical calculations from ...