# Correlation and Regression (CA Foundation Maths, Statictics, Logic, and Reasoning): Questions 37 - 42 of 42

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## Question number: 37

» Correlation and Regression

### Question

The errors in case of regression equations are

### Choices

Choice (4) | Response | |
---|---|---|

a. | Zero | |

b. | Positive | |

c. | Negative | |

d. | All a. , b. and c. are correct |

## Question number: 38

» Correlation and Regression

### Question

In case the correlation coefficient between two variables is 1, the relationship between the two variables would be

### Choices

Choice (4) | Response | |
---|---|---|

a. |
| |

b. |
| |

c. |
| |

d. |
Both a and b are positive |

## Question number: 39

» Correlation and Regression

### Question

The coefficient of correlation between two variables

### Choices

Choice (4) | Response | |
---|---|---|

a. | Can have any unit. | |

b. | Is a unit free measure | |

c. | Is expressed as the product of units of the two variables | |

d. | All of the above |

## Question number: 40

» Correlation and Regression

### Question

For finding the degree of agreement about beauty between two Judges in a Beauty Contest, We use

### Choices

Choice (4) | Response | |
---|---|---|

a. | Coefficient of rank correlation | |

b. | Scatter diagram | |

c. | Coefficient of correlation | |

d. | Coefficient of concurrent deviation. |

## Question number: 41

» Correlation and Regression

### Question

The covariance between two variables is

### Choices

Choice (4) | Response | |
---|---|---|

a. | Always 0 | |

b. | Strictly positive | |

c. | either positive or negative or zero. | |

d. | Strictly negative |

## Question number: 42

» Correlation and Regression

### Question

If the value of correlation coefficient is positive, then the points in a scatter diagram tend to cluster

### Choices

Choice (4) | Response | |
---|---|---|

a. | From lower right corner to upper left corner | |

b. | From lower right corner to upper right corner. | |

c. | From lower left corner to upper right corner | |

d. | From lower left corner to lower right corner |