Podcast
Questions and Answers
What is the formula to calculate the correct mean when there is an incorrect observation?
What is the formula to calculate the correct mean when there is an incorrect observation?
- ∑Xcorrect = n∑f - misread observation(s) + correct observation(s)
- ∑Xcorrect = n∑f + misread observation(s) - correct observation(s)
- ∑Xcorrect = ∑Xincorrect + misread observation(s) - correct observation(s)
- ∑Xcorrect = ∑Xincorrect - misread observation(s) + correct observation(s) (correct)
What happens to the arithmetic mean when every value of the variable X is increased by a constant (K)?
What happens to the arithmetic mean when every value of the variable X is increased by a constant (K)?
- It increases by K (correct)
- It remains the same
- It decreases by K
- It gets multiplied by K
What is the name of the average calculated from grouped data?
What is the name of the average calculated from grouped data?
- Geometric Mean
- Mode
- Median
- Arithmetic Mean (correct)
What is the sum of the deviations of a set of values from their arithmetic mean?
What is the sum of the deviations of a set of values from their arithmetic mean?
What is the correct mean wage in the example given in the text?
What is the correct mean wage in the example given in the text?
What is the total number of observations in the given frequency distribution?
What is the total number of observations in the given frequency distribution?
What is the assumption about the dataset in calculating the mode for grouped data?
What is the assumption about the dataset in calculating the mode for grouped data?
What is the formula to calculate the mode for grouped data?
What is the formula to calculate the mode for grouped data?
Why is the median considered a suitable average in a dataset with extreme values?
Why is the median considered a suitable average in a dataset with extreme values?
What is the purpose of the median in a dataset?
What is the purpose of the median in a dataset?
What is the modal class in a grouped dataset?
What is the modal class in a grouped dataset?
Why is the mean not suitable for a dataset with extreme values?
Why is the mean not suitable for a dataset with extreme values?
What is the most suitable average to use when analyzing phenomena involving rate and price?
What is the most suitable average to use when analyzing phenomena involving rate and price?
What is the relationship between the arithmetic mean, geometric mean, and harmonic mean for all positive observations?
What is the relationship between the arithmetic mean, geometric mean, and harmonic mean for all positive observations?
What is the limitation of calculating the harmonic mean?
What is the limitation of calculating the harmonic mean?
What is the formula to calculate the harmonic mean if the arithmetic mean and geometric mean are known?
What is the formula to calculate the harmonic mean if the arithmetic mean and geometric mean are known?
What is the term used to describe a distribution with more than two modes?
What is the term used to describe a distribution with more than two modes?
What is the primary characteristic of the mode in a dataset?
What is the primary characteristic of the mode in a dataset?
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