The arithmetic average of a set of data is known as its .
A: mean
B: median
C: precision
D: experimental result
A: mean
B: median
C: precision
D: experimental result
举一反三
- If the mean of a numerical data set exceeds the median, the data are considered to be left-skewed.
- The median of a data set with 20 items would be the average of the 10th and the 11th items in the ordered array.
- If a data set has an even number of observations, the median is the<br/>average value of the two middle items. ( <br/>)
- The median of a data set with 20 items would be the average of the 10th and the 11th items in the ordered array. A: 正确 B: 错误
- The measure of location which is the most likely to be influenced by extreme values in the data set is the ( ) A: range B: median C: mode D: mean