McqMate

Q. |
## The mean of a sample is |

A. | always equal to the mean of the population |

B. | always smaller than the mean of the population |

C. | computed by summing the data values and dividing the sum by (n - 1) |

D. | computed by summing all the data values and dividing the sum by the number of items |

Answer» D. computed by summing all the data values and dividing the sum by the number of items |

1.5k

0

Do you find this helpful?

1

View all MCQs in

Business StatisticsNo comments yet

- A numerical value used as a summary measure for a sample, such as sample mean, is known as a
- The sample mean is a
- 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.
- The mean weight of 150 students in a class is 60 Kg. The mean weight of Boy students is 70 Kg and that of a girl students is 55 kg. Find the number of Boys and Girls in the class.
- The mean of 10 observations is 10. All the observations are increased by 10%. The mean of increased observations will be:
- 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:
- The sample coefficient of correlation
- Find the mean of 13,18,13,14,13,16,14,21,13
- The following numbers represent the ages of people on a bus: 3, 6, 27, 13, 6, 8, 12, 20, 5, 10. Calculate their mean of their ages.
- If the mode is 14 and value of mean is 5 then the value of median is