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Q.1 ૧. નીચેના પૈકી કયો વિકલ્પ, બે ચલ વચ્ચેનો વિધેયાત્મક સંબંધ દર્શાવે છે?
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Q.2 ૧૦. બે ચલ વચ્ચેના નિયતસંબંધના અભ્યાસમાં નિશ્ચાયકતાનો આંક એટલે શું?
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Q.3 ૮. નીચેના પૈકી $Y$ ની $X$ પરની નિયતસંબંધ રેખા કઈ છે?
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Q.4 ૧૩. $Y$ ની $X$ પરની નિયતસંબંધ રેખા $\hat{y} = 30 - 1.5x$ છે. જો $\bar{x} = 10$ હોય તો $\bar{y}$ ની કિંમત કેટલી થાય?
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Q.5 ૧૫. જો $r = 0.8$ હોય તો સાપેક્ષ ચલના કુલ ચલનનો કેટલો ભાગ નિયતસંબંધ મૉડેલ દ્વારા સમજાવી શકાય છે?
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Q.6 ૧૧. જો $Y$ ની $X$ પરની નિયતસંબંધ રેખા $\hat{y} = 10 + 3x$ હોય તો $X = 20$ માટે $Y$ ની કિંમતનું અનુમાન કેટલું થાય?
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Q.7 ૨. નિયતસંબંધની શ્રેષ્ઠ અન્વાયોજિત રેખા કઈ રીતથી મેળવાય છે?
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Q.8 ૯. સહસંબંધાંક ($r$)ની કઈ કિંમત માટે નિયતસંબંધાંકની કિંમત શૂન્ય થાય છે?
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Q.9 ૩. પ્રચલિત સંકેતમાં $b$ એટલે શું?
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Q.10 ૫. નિયતસંબંધ રેખા કયા બિંદુમાંથી હંમેશાં પસાર થાય છે?