REVIEW

2. The t-distribution was developed by ___________________ in 1908.

6. The shape of the t-distribution curve depends on the number of ____________. 

1. T-distribution is used to estimate population parameters when the sample size is _________ & VARIANCE IS UNKNOWN.

10. To compute for the variance, use the formula ___________________.

7. The t-distribution has lower peak and __________ tails than the normal curve.  

4.The t-distribution has tails that are asymptotic to the _________________ axis.

5. The mean, median and mode of t-distribution are equal to ___________.

3. The t-distribution is ____________ -shaped symmetrical about zero and has the total area under its curve equal to 1.

8. As the degrees of freedom increases, the t-distribution tends to the ___________.

9. The variance and the standard deviation of the t-distribution is always ___________________ 1.