h = ztest(x, m, sigma)
h = ztest(x, m, sigma, 'Alpha', alpha)
h = ztest(x, m, sigma, 'Tail', tail)
h = ztest(x, m, sigma, 'Dim', dim)
[h, p, ci, zval] = ztest(...)
| Parameter | Description |
|---|---|
| x | real numeric array: sample data. |
| m | real scalar: hypothesized mean. |
| sigma | positive real scalar: known standard deviation. |
| alpha | scalar in (0,1), 0.05 by default: significance level. |
| tail | 'both', 'right', or 'left'. |
| dim | positive integer: dimension to operate along. |
| Parameter | Description |
|---|---|
| h | logical array: test decision. |
| p | array: p-values. |
| ci | 2-row array: confidence intervals for the mean. |
| zval | array: z statistics. |
ztest performs a z-test along the first non-singleton dimension unless Dim is specified.
NaN values are omitted from each tested slice.
x = [72 75 77 70 74 76];
[h, p, ci, zval] = ztest(x, 75, 10);
[h2, p2] = ztest(x, 72, 10, 'Tail', 'right');| Version | Description |
|---|---|
| 2.0.0 | initial version |