Define what is meant by stratification of samples.

What will be an ideal response?


Stratification of samples is the process of identifying subpopulations (or strata) and then selecting objects or people for sampling within these subpopulations.

Computer Science & Information Technology

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In a cout statement, which of the following will advance the output position to the beginning of the next line?

a. endl or \n b. end1 or /n c. \n or \t d. \t or \b e. \\ or \'

Computer Science & Information Technology

What would be the result after the following code is executed?

``` int[] x = {23, 55, 83, 19}; int[] y = {36, 78, 12, 24}; for(int a = 0; a < x.length; a++) { x[a] = y[a]; y[a] = x[a]; } ``` a. x[] = {36, 78, 12, 24} and y[] = {23, 55, 83, 19} b. x[] = {36, 78, 12, 24} and y[] = {36, 78, 12, 24} c. x[] = {23, 55, 83, 19} and y[] = {23, 55, 83, 19} d. Nothing. This is a compile error.

Computer Science & Information Technology

Which of the following methods are in the Collection interface?

a. clear() b. isEmpty() c. size() d. getSize()

Computer Science & Information Technology

What should you do if a monitor displays one or more vertical lines in the display? (Select all that apply.)

A) Check for overheating video chip. B) Ensure there is sufficient air flow through the computer. C) Check that the screensaver is not too powerful for the amount of video RAM available. D) Visually check the video cable. E) Verify the video driver.

Computer Science & Information Technology