COUNT function
COUNT function determines how many cells in a range contain
a number. We use this function to get the number of entries in a number field
in an array of numbers. The formula one can use is G1:[…..]: = COUNT(G1:[…..])
Answer:
True
Explanation:
Not(False) OR False = True OR False = True
Slow computer, blue screen, Programs opening and closing automatically, Lack of storage space, Suspicious modem and hard drive activity, Pop-ups, websites, toolbars and other unwanted programs, or spam.
Answer and Explanation:
Some of the advantages of using the F measure (weighted harmonic mean) over using the Precision & Recall when evaluating an IR system performance are as follows-
- Precision quantifies the number of positive class predictions that actually belong to the positive class.
- Recall quantifies the number of positive class predictions made out of all positive examples in the dataset.
- F-Measure provides a single score that balances both the concerns of precision and recall in one number.
- A measure that combines precision and recall is the harmonic mean of precision and recall, the traditional F-measure or balanced F-score:
F=2((precision.recall)/(precision+recall))
