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29 Απρ 2022 · Find the critical value of t in the two-tailed t table. Multiply the critical value of t by s / √ n . Add this value to the mean to calculate the upper limit of the confidence interval, and subtract this value from the mean to calculate the lower limit.
This t-distribution table provides the critical t-values for both one-tailed and two-tailed t-tests, and confidence intervals. Learn how to use this t-table with the information, examples, and illustrations below the table.
Two Tailed Student's t-Distribution Table 71 2.65 2.38 1.99 1.67 1.29 1.16 0.68 Two Tailed Student's t-Distribution Table 96 2.63 2.37 1.98 1.66 1.29 1.16 0.68
Critical values of t for two-tailed tests Significance level (a) Degrees of freedom 20 22 23 24 29 30 40 50 60 70 80 100 1000 Infinite 0.2 3.078
14 Ιουλ 2007 · t Table cum. prob t.50 t.75 t.80 t.85 t.90 t.95 t.975 t.99 t.995 t.999 t.9995 one-tail 0.50 0.25 0.20 0.15 0.10 0.05 0.025 0.01 0.005 0.001 0.0005 two-tails 1.00 0.50 0.40 0.30 0.20 0.10 0.05 0.02 0.01 0.002 0.001 df 1 0.000 1.000 1.376 1.963 3.078 6.314 12.71 31.82 63.66 318.31 636.62 2 0.000 0.816 1.061 1.386 1.886 2.920 4.303 6.965 9.925 22.327 31.599
Critical t value (negative) a Left tail Critical t value (positive) a Right tail Critical t value (positive) Critical t value (negative) a/2 a/2 Two tails TABLE A-3 tDistribution: Critical tValues Area in One Tail 0.005 0.01 0.025 0.05 0.10 Degrees of Area in Two Tails Freedom 0.01 0.02 0.05 0.10 0.20 1 63.657 31.821 12.706 6.314 3.078 2 9.925 ...
Table of Critical Values for T Two Tailed Significance DF 0.2 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 2 1.89 2.92 4.30 9.92 14.09 31.60 44.70 100.14 3 1.64 2.35 3.18 5.84 7.45 12.92 16.33 28.01 4 1.53 2.13 2.78 4.60 5.60 8.61 10.31 15.53 5 1.48 2.02 2.57 4.03 4.77 6.87 7.98 11.18 6 1.44 1.94 2.45 3.71 4.32 5.96 6.79 9.08
