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Q.1 ૧૨. એક માહિતીનાં અવલોકનોનો મધ્યક અને પ્રમાણિત વિચલન અનુક્રમે 45 અને 5 છે. જો દરેક અવલોકનમાં અચલ સંખ્યા 5 ઉમેરવામાં આવે, તો નવી માહિતી બને તેનાં અવલોકનોનો ચલનાંક કેટલો થાય?
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Q.2 ૭. એક માહિતીના પ્રથમ અને તૃતીય ચતુર્થકો અનુક્રમે 30 અને 50 હોય, તો ચતુર્થક વિચલનાંકની કિંમત કેટલી થાય?
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Q.3 ૮. અવલોકનો 5, 5, 5, 5, 5 માટે પ્રસારનું કોઈ પણ માપ શું થાય?
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Q.4 ૩. નીચેના પૈકી કયું માપ એકમથી મુક્ત છે?
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Q.5 ૫. જો સમૂહ Aનો ચલનાંક એ સમૂહ Bના ચલનાંક કરતાં ઓછો હોય, તો કયો સમૂહ ચલનની દ્રષ્ટિએ વધુ સ્થિર ગણાય?
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Q.6 ૧૧. એક ચલનો મધ્યક 5 અને પ્રમાણિત વિચલન 2 છે. જો $y = 3x + 4$ હોય તો ચલ $y$ નો મધ્યક અને પ્રમાણિત વિચલન અનુક્રમે કેટલા થાય?
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Q.7 ૬. 10 વિદ્યાર્થીઓનાં વજન (કિગ્રામાં) નીચે મુજબ છે: 53, 47, 60, 55, 71, 65, 61, 68, 63, 70. આ માહિતીનો વિસ્તાર કેટલો છે?
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Q.8 ૯. એક ચલ માટે મધ્યક 10 અને ચલનાંક 60% હોય, તો ચલનું વિચરણ કેટલું થાય?
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Q.9 ૧૦. એક શ્રેણીનું પ્રમાણિત વિચલન 5 છે.(i) જો દરેક અવલોકનમાં 2 ઉમેરવામાં આવે ($k_i + 2$), તો નવી શ્રેણીનું પ્રમાણિત વિચલન શું થશે?(ii) જો દરેક અવલોકનને 3 વડે ગુણવામાં આવે ($3k_i$), તો નવી શ્રેણીનું પ્રમાણિત વિચલન શું થશે?
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