Describe the difference between mean, median, and mode: The mean is the average of a distribution; it is also referred to as the balance point and is the most common method to describe a central tendency. The median is the score at the exact physical middle of a set of values. The dataset must be ordered from smallest to largest before determining the median score. If there is an even-numbered dataset, use the average of the two middle numbers to determine the median. The mode is the most frequent recurring value in the dataset. Describe the difference between the range and the standard deviation: The range is the highest value minus the lowest value in a dataset. Standard deviation (SD) is a measure that represents the average difference between the scores and the mean of the distribution. In other words, how close are the values to the mean? SD is measured in the same units as the original measure to make the data meaningful. For example, an SD close to 0 expresses the data as very close to the mean, and a high SD expresses the data as more spread out