举一反三
- The arithmetic mean is computed by ( ) A: finding the value that occurs most often B: finding the middle observation and dividing by 2 C: summing the values and dividing by the number of values. D: selecting the value in the middle of the data set.
- 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
- If the mean of a numerical data set exceeds the median, the data are considered to be left-skewed.
- Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called:
- In a set of numerical data, the value for Q3 can never be smaller than the value for Q1.
内容
- 0
In a set of numerical data, the value for Q2 is always halfway between Q1 and Q3.
- 1
The arithmetic average of a set of data is known as its . A: mean B: median C: precision D: experimental result
- 2
Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called A: statistical inference. B: the scientific method. C: sampling. D: descriptive statistics.
- 3
If a data set has an even number of observations, the median is the<br/>average value of the two middle items. ( <br/>)
- 4
Those methods involving the collection, presentation, and<br/>characterization of a set of data in order to properly describe the<br/>various features of that set of data are called<br/>( ) A: statistical inference. B: the scientific method. C: sampling. D: descriptive statistics.