यदि वर्गीकृत आंकड़ों के वर्ग अन्तरालों के मध्यमान .x' है,
अनुरूप बारंबारताएँ।। है और : माध्य है, तो 20 (-3)
बराबर है
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John Shakespeare was an English businessman in Stratford-upon-Avon and the father of William Shakespeare. He was a glover and whittawer by trade. Wikipedia
Born: 1531, Stratford-upon-Avon, United Kingdom
Died: 7 September 1601, Stratford-upon-Avon, United Kingdom
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