Statistical kernels are not supported on integrated graphics

[AlexanderKalistratov]

Integrated graphics doesn't support double data type.

cov supports only double input and output: https://github.com/IntelPython/dpnp/blob/cfc9b40f97d5cbc3114171728bf96e6f59b74005/dpnp/backend/kernels/dpnp_krnl_statistics.cpp#L1380

max, min, mean, median, var and std supports only double output for integer input: https://github.com/IntelPython/dpnp/blob/cfc9b40f97d5cbc3114171728bf96e6f59b74005/dpnp/backend/kernels/dpnp_krnl_statistics.cpp#L1400

[vlad-perevezentsev]

Most statistical functions have been updated and no longer use the kernels from dpnp_krnl_statistics.cpp (#1396 , #1602, #1632, #1635) Those functions that still use kernels from this file (like median) have been updated to support float data type to run on Iris Xe #1494.

All statistical functions run on integrated graphics without support for double precision types

Example of running test_statistics on Iris XE

$ pytest -v tests/test_statistics.py

============================================= 1030 passed in 19.66s ==============================================

@AlexanderKalistratov If you don't have any additional questions, could you please close this issue?