Question
Download Solution PDFदो चर राशियों X और Y के बीच सहसंबंध गुणांक 0.48 है। सहप्रसरण 36 है। X का प्रसरण 16 है। Y का मानक विचलन है:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है
σx = √16 = 4
r = 0.48
सहप्रसरण = ∑xy/N = 36
सूत्र
सहप्रसरण = ∑xy/N
r = ∑xy/N.σx × σy
गणना
प्रश्न के अनुसार
⇒ 0.48 = 36/4 × σy
⇒ σy = 9/0.48
∴ y(σy) का मानक विचलन 18.75 है।
Last updated on Jun 10, 2025
-> The SSC CGL Notification 2025 has been released on 9th June 2025 on the official website at ssc.gov.in.
-> The SSC CGL exam registration process is now open and will continue till 4th July 2025, so candidates must fill out the SSC CGL Application Form 2025 before the deadline.
-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.
-> Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.
-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.
-> The CGL Eligibility is a bachelor’s degree in any discipline.
-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.
-> Candidates should also use the SSC CGL previous year papers for a good revision.