A group of students measure water temperature at 7 different points in an experiment and calculate the median. the average (arithmetic mean), and the standard deviation of the measurements. If the students discover that their thermometer gave readings that were uniformly 4 degree too low l, and they correct their measurements, then which of the following statements is true?
a. only meadian is unchanged
b.only the average is unchanged
c. only the standard deviation is unchanged
d. the mean and the median is unchanged
e. the median and the standard deviation are both unchanged
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Answer:
option c is right
only the standard deviations is unchanged
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