Kuder–Richardson Formula 20

Summary

Kuder–Richardson Formula 20 is a formula^[1]. It draws 41 Wikipedia views per month (formula category, ranking #114 of 501).^[2]

Key Facts

• Kuder–Richardson Formula 20 is credited with the discovery of G. Frederic Kuder^[3].
• Kuder–Richardson Formula 20 is credited with the discovery of Marion Webster Richardson^[4].
• Kuder–Richardson Formula 20's instance of is recorded as formula^[5].
• G. Frederic Kuder is named after Kuder–Richardson Formula 20^[6].
• Marion Webster Richardson is named after Kuder–Richardson Formula 20^[7].
• Kuder–Richardson Formula 20's Freebase ID is recorded as /m/053nvm^[8].
• Kuder–Richardson Formula 20's Encyclopædia Britannica Online ID is recorded as topic/Kuder-Richardson-formula^[9].
• Kuder–Richardson Formula 20's defining formula is recorded as r = \frac{K}{K-1} \left[ 1 - \frac{\sum_{i=1}^K p_i q_i}{\sigma^2_X} \right]^[10].
• Kuder–Richardson Formula 20's maintained by WikiProject is recorded as WikiProject Mathematics^[11].
• Kuder–Richardson Formula 20's Microsoft Academic ID is recorded as 34459237^[12].

Body

Works and Contributions

Credited discoveries include G. Frederic Kuder^[3], a psychologist^[13], 1903–2000^[14] and Marion Webster Richardson^[4], 1896–1965^[15].

Why It Matters

Kuder–Richardson Formula 20 draws 41 Wikipedia views per month (formula category, ranking #114 of 501).^[2] It has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.^[16]