Back to Homepage
for homework help in math & statistics.
Statistical Calculator
Z-Table, T-table, Chi-squared table, C4 table
Much faster and more accurate than looking it up in a book!
Great for homework or an online statistics class. So easy it's almost cheating!
Table 1:
Standard normal distribution
(z)
Table 2:
Student's t-distribution
(t)
Table 3:
Chi-squared distribution
(
c
2
)
Table 4:
C4 table
(text)
Table 1: Standard Normal Distribution
Left tail
Right tail
Middle
Two-tail
z value
probability
Table 2: Student's t-Distribution
Left tail
Right tail
Middle
Two-tail
d.f.
t value
probability
Table 3: Chi-Squared (
c
2
) Distribution
Left tail
Right tail
d.f.
c
2
value
probability
Table 4: Values of the c
4
constant for x-bar charts
The value of c
4
for subgroup size
n
is shown below.
n
2
3
4
5
6
7
8
9
10
c
4
0.780
0.886
0.921
0.940
0.952
0.959
0.965
0.969
0.973