Independent t-Test
Sample Results as an Excel Table:
t-Test (independent) |
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Price |
95% |
||||
N |
Mean |
Conf. (±) |
Std.Error |
Std. Dev. |
|
New or Used |
|||||
new |
34 |
11804.79412 |
1903.67244 |
935.6813819 |
5455.913127 |
used |
38 |
3998.447368 |
665.6249241 |
328.5066272 |
2025.050853 |
entire sample |
72 |
7684.777778 |
1316.28022 |
660.114329 |
5601.255821 |
F-Test: |
F |
P |
|||
7.258769835 |
3.47934E-08 |
||||
t-Test: |
|||||
Variance Estimate |
T |
Degrees of Freedom |
P |
||
Pooled |
8.215753898 |
70 |
7.31613E-12 |
||
Separate |
7.871892371 |
41.08006019 |
9.83355E-10 |
||
You may choose any %-value for the confidence interval.
Note: with the "Means" command you can create a chart of the means differences displayed here.