A. The range of the entire data set. B. The middle 50% of the data. C. The highest and lowest values in the data. D. The average value of the data. 相关知识点: 试题来源: 解析 B。解析:在箱线图中,四分位数间距代表数据的中间 50%。反馈...
What is the interquartile range and how is it determined? Suppose we have a data set with a mean of 4 and variance of 64. if we add 2 to every observation, then the coefficient of variation will: a) increase b) decrease c) Stay the same d) none of the above...
Tertiles divide data into three equal parts; quartiles divide data into four. Both are statistical measures of spread.
Quantiles can represent any division of the data into equal intervals, while quartiles are specifically the division into four equal parts. 8 Can quantiles be used for all types of data? Yes, quantiles can be used for any continuous or discrete data distribution. 8 What is the difference betw...
The control score of the 47.26 on the pretest put it at the 26th percentile. Does this percentile score represent nominal, ordinal, or interval scale data? Linh has obtained scores of 82, 75, and 71 on her midterm algebra exams. If the final ex...
Quota sampling does not require a sampling frame or strict random sampling techniques, which makes this method quicker and easier than other methods. Among non-probability sampling methods, quota sampling is the most likely to accurately represent the entire population, especially when you use proporti...
There arecountless waysto identify these outliers, ranging from simple to sophisticated: sorting your data/spreadsheet, visualizing the data using graphs, charts, etc., looking at z-scores, creating outlier fences using interquartile ranges — among many others. ...
like a backup of your QR Code data. The higher the error correction level, the greater the chances of retrieving the data after damage to a QR Code. Inversely, the lower the error correction level, the more space for data and size. There are four levels: low, medium, quartile, and ...
If the inter-quartile range of the group of numbers 0, 3, 7, 17, 30, x, 51, 70 is 41.5, find the value of x. (Assume the group of numbers is arranged in ascending order.) The median of $(20, x, 15, 30, 25) is $0.40 less than the mean. If $x is a whole number, w...
What is a ROC curve? What does the y-axis represent and what does the x-axis represent? (a) How do you space the labels on the X or Y axis of a graph? (b) Why must you be careful when selecting the amounts used as these labels?