books population variance and sample variance
If you do not find what you're looking for, you can use more accurate words.
# Sample variance
# The sample and the statistical population
# Ordinal Homogeneity and Sequence Variance
# The sample and the study population
# Study and sample population
# sample and community
# The sample and society in scientific research
# What is a random sample?
# What is the sample?
# No contrast, conjugated contrast, and opposite contrast
# Research community and sample
# The characteristics of the sample and the research community
# sample community
# Research community and sample system
# Sample population
# Sample collection conditions
# The sample in social research
# The importance of the sample in social work
# Sample data collection method
# sample in sociology
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Source: wikipedia.org
تباين المجتمع وتباين العينة (Info)
في الواقع العملي (التطبيقي) تباين المجتمع يكون في أغلب الأحيان غير معروف (مجهول) لذلك يجب الاستعاضة عن التباين (تباين المجتمع) بقيمة تقديرية هي تباين العينة:
حيث أن هو الوسط الحسابي للعينة:
