What is the difference between calculating standard deviation of a population versus a sample?
What will be an ideal response?
When calculating standard deviation the ideal scenario would require all data from the entire group in question. In many situations this not possible, for example calculating the standard deviation of age for a city. Acquiring all information from every inhabitant would be difficult. When faced with this situation, statisticians often take a sample of the entire population to perform calculations. In Excel the function STDEV.S would be used for samples and STDEV.P would be used for a population.
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Match the following keys to their actions:
I. W A. Moves selected objects in small increments II. B B. Used when selecting multiple objects III. Esc C. Displays a black screen IV. Ctrl D. Alternate method to turn off the Crop feature V. Right-arrow E. Displays a white screen
What does pink highlight on text mean?
What will be an ideal response?
COGNITIVE ASSESSMENT Which of the following is NOT true about NFC?
A. It stands for near field communications. B. It is based on RFID. C. You can purchase blank NFC tags at a reasonable cost. D. For successful communications, the devices must not touch or come within 6 inches of each other.
A(n) ________ for a field reduces the time it takes to run queries and reports.
Fill in the blank(s) with the appropriate word(s).