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When missing data points are randomly distributed, imputing values using the mean (for continuous data) or median (for skewed distributions) can be an effective technique. This approach maintains the dataset’s overall structure and helps reduce potential bias introduced by missing values. By substituting missing values with central tendencies, analysts can preserve statistical relationships without significantly distorting the data, ensuring a more accurate analysis. Option A is incorrect as removing rows may lead to a significant data loss, especially if many rows contain missing values. Option C is incorrect because dropping columns with missing values reduces feature dimensions, potentially discarding useful information. Option D is incorrect as placeholder values can introduce bias or mislead analysis, especially if the placeholder value skews the distribution. Option E is incorrect because ignoring missing values leaves gaps, making it difficult to perform accurate analysis.
One who is selflessly concerned with welfare of others
Price stability exist when average prices are constant over time, or when they are rising at a very low and predictable rate.
...Before sleeping, (A)/you should make sure (B)/that you have locked all doors, (C)/preventing theft (D).
My brother Mohit (a) / is much smarter (b) / then me. (c) / No error (d)
No effort has been made at all (a) / to cash on (b) / the refurbished image of Indian tennis (c) / No Error (d)
Directions: In each of the questions, a sentence has been divided into four parts, one of which may contain an error. Identify that fragment and mark ...
The edited image/ shows Trump's head/ superimposed into a/ picture of Superman.
Vinay had been reading news paper (A)/ since (B)/ two days. (C)/ No error (D)
Parts of the following sentence are given as options. Identify the segment that contains a grammatical error.
Bhanu finished to read such a thi...