Seventh, because the immune system is weak it cannot kill enough cancer cells and the cancer cells grow out of control. Thus, in summary, the root cause of cancer is microbes and parasites that are in the organs or colon (or bloodstream), which weakens the immune system. However, other things can cause cancer.
Test Reliability and Validity Defined Reliability. Test reliablility refers to the degree to which a test is consistent and stable in measuring what it is intended to measure. Most simply put, a test is reliable if it is consistent within itself and across time.
ACT National Curriculum SurveyÂ® Does the test predict performance in a reliableway? Content Validity Standards Review Test Blueprint Test Scores/ Results Predictive Validity Course Performance Students and High Schools: Define what students know and are able to do. ACT College and Career Readiness Standards ACT College Readiness Benchmarks