A measured value is within two standard deviations of the mean but not within one standard ...

ANS: A, B, D, E
The range, standard deviation, and variance are statistics that describe the extent to which the values in the sample vary from one another. The most common of these statistics to be reported in the literature is the standard deviation, because of its direct association with the normal curve. If the frequency distribution of any given variable is approximately normal, knowing the standard deviation of that variable allows the reader to know what percentages of subjects' values on that variable fall between +1 and 1 standard deviation. In a normal distribution, when a standard deviation is calculated, 34.13 of the values are between the mean score and 1 standard deviation above the mean. Similarly, 34.13 of the values are between the mean score and 1 standard deviation below the mean. The middle 95.44 of the subjects' scores are between +2 standard deviations and 2 standard deviations.