Research Methodology · Experimental Validity
आंतरिक वैधता (internal validity) के खतरों को नियंत्रित करने की विधियाँ निम्नलिखित में से कौन सी हैं? A. प्लेसबो (Placebo) B. ब्लाइंड सेट अप (Blind set up) C. यादृच्छिकरण (Randomization) D. बहु-उपचार हस्तक्षेप (Multiple treatment interference) नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1केवल A, B, D
- 2केवल B, C, D
- 3केवल A, C, D
- 4केवल A, B, C✓
सही उत्तर देखें
केवल A, B, C
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