McqMate

Q. |
## In a bivariate sample, the sum of squares of differences between marks of observed values of two variables is 33 and the rank correlation between them is 0.8. Find the number of pairs of observations: |

A. | 12 |

B. | 10 |

C. | 15 |

D. | 18 |

Answer» B. 10 |

2k

0

Do you find this helpful?

16

View all MCQs in

Business StatisticsNo comments yet

- If the sum of squares of the rank differences of 10 pairs of values is 30, find the correlation coefficient between them.
- In a bivariate distribution, Spearman’s Coefficient of Correlation is -0.25. If the sum of the squares of various ranks is 150, find out the number of pairs of items:
- The rank correlation coefficient of a debating contest involving 10 participants was calculated as 0.6. However, it was later discovered that the difference in the ranks of some participants was read as 8 instead of 3. Find the correct correlation coefficient:
- The mean of 10 observations is 10. All the observations are increased by 10%. The mean of increased observations will be:
- The arithmetic mean of the marks obtained by 50 students was calculated as 44. It was later discovered that a score of 36 was misread as 56. Find the correct value of arithmetic mean of the marks obtained by the students.
- If there is a very strong correlation between two variables then the correlation coefficient must be:
- The arithmetic mean is 12 and the number of observations are 20 then the sum of all the values is
- The sum of all the squared deviations is divided by the total number of observations to calculate
- The Correlation coefficient between two variables is the………………..of their regression coefficients.
- The sum of the squares of the deviations of the variable is when taken about arithmetic mean