Q2: Lesson 3: Properties of T-distribution

0

The t-distribution is symmetrical about _____.

Heavier

The t-distribution is bell-shaped like the normal distribution but has _____ tails.

0

The mean, median, and mode of the T-distribution all equal to _____.

Normal distribution

As the degree of freedom increases, the t-distribution curve looks more and more like the _____.

Greater

The variance is always _____ than 1, and is limited only to 3 or more degrees of freedom. It means this distribution has a higher dispersion than the standard normal distribution.

Sample size

The standard deviation of the t-distribution varies with the _____.

1 or 100%

The total area under the t-distribution curve is _____.

−∞ to +∞

State the range of a t-distribution:

Degrees of freedom

The shape of the t-distribution varies with the change in __________.