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!=Validity
!=Reliability
→Accuracy and Precision
==Difference between Population and Sample==
===Accuracy /Validity and Precision/Reliability===
{|class="wikitable"
|+Definition
|-
!Accuracy= Validity
|
*Closeness of observed values '''to true population values'''
**AKA 'Trueness'
|-
!Precision= Reliability
|
*Closeness of observed values '''to each other among sample'''
|}
</div>
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https://nesslabs.com/wp-content/uploads/2020/07/mental-models-validity-reliability.png
==Tips in Case-control design==
