python-scipyHow do I use Python Scipy to perform a Z test?
Scipy
is a library for scientific computing in Python. It provides functions for performing various statistical tests, including the Z-test.
To use Scipy
to perform a Z-test, you will need to import the stats
module. This module contains the ztest
function which can be used to perform the Z-test.
from scipy import stats
z_score, p_value = stats.ztest(x1, x2)
The ztest
function takes two arguments, x1
and x2
which are the two samples being compared. It returns two values, the z_score
and the p_value
. The z_score
is the standardized test statistic and the p_value
is the probability of obtaining the observed results, given that the null hypothesis is true.
Code explanation
from scipy import stats
- imports thestats
module from theScipy
library.z_score, p_value = stats.ztest(x1, x2)
- calls theztest
function from thestats
module, passing in two samplesx1
andx2
as arguments. It returns two values,z_score
andp_value
.
Helpful links
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