Suppose a researcher at State University wants to know how satisfied students are with dormitory living. Message. t Table. We review the key properties of the t distribution and how to perform the various t tests in Excel, along with how to handle situations where some of the sample data is missing.. Tables • T-11 Table entry for p and C is the critical value t∗ with probability p lying to its right and probability C lying between −t∗ and t∗. df a = 0.1 0.05 0.025 0.01 0.005 0.001 0.0005 ∞ ta = 1.282 1.645 For example, t(19, 0.95) = 1.729. T-Table The Student’s T Distribution is another member of the Continuous Probability Distributions. The column header probabilities are the t distribution probabilities to the left of the critical value. The t-distribution. The Student’s t Distribution and the corresponding t tests play an important role in hypothesis testing of the mean. Range Distribution: q (t, v) Table 11 Percentage Points for Dunnett’s Test: d (k, v) Table 12 Percentage Points for Hartley’s F max Test: F max, Table 13 Random Numbers Table 14 F Test Power Curves for AOV Table 15 Poisson Probabilities: Pr(Y y) 1090. Critical t* values are given in the table. T distribution looks similar to the Normal Distribution curve (z distribution), with slight variation in the peak and variations in tails. The researcher administers a survey where students answer questions on a scale of 1 to 7 with 1 representing very unsatisfied with dormitory living and 7 representing very satisfied with dormitory living. T-Distribution Table (One Tail) For the T-Distribution Table for Two Tails, Click Here. As a statistical tool, a t-table lists critical values for two-tailed tests. T Table Z Distribution Chi-Square Distribution F Distribution. t-distribution table Areas in the upper tail are given along the top of the table. Choose X or P(x≤X) Calculate Clear. digits: example digits=2: (0.001234 => 0.0012) df: degrees of freedom. Topics: Basic Concepts; One Sample t Test; Two Sample t Test: equal variances T-student distribution is an artificial distribution used for a normally distributed population when we don't know the population's standard deviation or when the sample size is too small. You then use these values to determine confidence values. Probability p t* TABLE D t distribution critical values Upper-tail probability p df .25 .20 .15 .10 .05 .025 .02 .01 .005 .0025 .001 .0005 The table values are critical values of the t distribution. Statistical T-Distribution — The “T-Table” By Deborah J. Rumsey .