<<123456789101112131415161718192021>> 1. What does correlation measure in statistical analysis?MeanVariabilityThe degree and direction of relationship between two or more variablesThe medianQuestion 1 of 21 2. What is positive or direct correlation?Variables moving in opposite directionsVariables moving in the same directionVariables with no relationshipVariables with zero varianceQuestion 2 of 21 3. In a positive correlation, what happens when the value of one variable increases?The other variable decreasesThe other variable remains constantThe other variable also increasesThe relationship is not affectedQuestion 3 of 21 4. What is negative or indirect correlation?Variables moving in the same directionVariables with no relationshipVariables moving in opposite directionsVariables with zero varianceQuestion 4 of 21 5. In a negative correlation, what happens when the value of one variable increases?The other variable decreasesThe other variable remains constantThe other variable also increasesThe relationship is not affectedQuestion 5 of 21 6. What is Linear Correlation characterized by?Change in variables in a fixed ratioChange in variables in a changing ratioVariables moving in opposite directionsNo relationship between variablesQuestion 6 of 21 7. In a Linear Correlation, how is the relationship between variables when the curve moves from left to right in an upward direction?PositiveNegativeNo correlationZero varianceQuestion 7 of 21 8. What is the characteristic of Non-linear or Curvi-linear Correlation?Change in variables in a fixed ratioChange in variables in a changing ratioVariables moving in opposite directionsNo relationship between variablesQuestion 8 of 21 9. In a Non-linear or Curvi-linear Correlation, how is the relationship between variables when the curve moves from left to right in an upward direction?PositiveNegativeNo correlationZero varianceQuestion 9 of 21 10. What is the difference between Linear and Non-linear Correlation?The direction of the curveThe type of variables involvedThe presence of a fixed ratioThe absence of a changing ratioQuestion 10 of 21 11. In the context of the coefficient of correlation, what does a value of +1 indicate?Nil correlationPerfect positive correlationPerfect negative correlationNo relationship between variablesQuestion 11 of 21 12. What does a coefficient of correlation value of -1 suggest?Nil correlationPerfect positive correlationPerfect negative correlationNo relationship between variablesQuestion 12 of 21 13. If the coefficient of correlation is 0, what does it indicate about the relationship between variables?Nil correlationPerfect positive correlationPerfect negative correlationNo relationship between variablesQuestion 13 of 21 14. What is the range of the coefficient of correlation?-8 to +80 to 1-1 to 10 to 8Question 14 of 21 15. How can the study of correlation be conducted using the scatter diagram method?By analyzing frequency distributionsBy plotting points on a graphBy calculating the meanBy performing statistical testsQuestion 15 of 21 16. What is regression analysis used for in statistics?Describing variability in a datasetEstimating or predicting the unknown value of a dependent variableIdentifying the mode of a distributionCalculating the median of a datasetQuestion 16 of 21 17. In regression analysis, what are the variables involved in predicting the unknown value?Independent variablesDependent variablesBoth A and BNone of the aboveQuestion 17 of 21 18. If price (X) and demand (Y) are closely related, what can regression analysis help estimate?PriceDemandBoth A and BNeither A nor BQuestion 18 of 21 19. In regression analysis based on change in proportions, what are the two main types?Linear Regression and Quadratic RegressionSimple Regression and Multiple RegressionLinear Regression and Non-linear RegressionPartial Regression and Multiple RegressionQuestion 19 of 21 20. What type of regression involves a change in the number of variables?Simple regressionPartial regressionMultiple regressionAll of the aboveQuestion 20 of 21 21. If the values of 'a' and 'b' are known in a regression equation, what can be defined completely?The mean of X and YThe intercept and the change in YThe regression linesThe median of X and YQuestion 21 of 21 Loading...
