A data set has the numbers 5, 8, 10, 12, and 15. What is the mean of these numbers? A. 8 B. 10 C. 12 D. 15 相关知识点: 试题来源: 解析 B。本题考查平均数的计算。平均数等于所有数的和除以数的个数,(5 + 8 + 10 + 12 + 15)÷5 = 10。
结果1 题目 22 A set of data consists of 5 numbers. The mean of the set of data is 12 and the standard deviation is 1.234. Find(a)the sum of the numbers,(b) the sum of the squares of the numbers. 相关知识点: 试题来源: 解析 (a)60(b) 反馈 收藏 ...
mean可以用作名词，表示平均值或中间值。例如：The mean of the data set is 10.这组数据的平均值是10。mean还可以表示方式或方法。例如：There are many means of transportation available in the city.城市里有很多种交通方式可供选择。mean作为动词，可以表示意味着、表示。例如：His silence means...
the median is the fourth number (since there are three before and three after). In this set (2, 3, 3, 4, 6, 8, 9), themedianis 4. When a set has an even number of values, themedianis the mean of the two middle values (in other words...
nesting parentheses occurs when one set appears within another set – it’s sort of like putting one box inside another box within a larger box… you get the idea! this particular action can sometimes get confusing because now instead of just looking at one big block you are dealing with ...
A. The average value. B. The most frequently occurring value. C. The sum of all values. D. The difference between the highest and lowest values. 相关知识点: 试题来源: 解析 B。“mode”在统计语境下指的是众数,即一组数据中出现次数最多的值。选项 A 是平均数;选项 C 是所有值的总...
A. The average of the data. B. The middle value of the data. C. The difference between the highest and lowest values. D. The sum of all values. 相关知识点: 试题来源: 解析 C。“range”在统计语境下指的是极差,即一组数据中最大值和最小值的差。选项 A 是平均数;选项 B 是中位数...
When a linear correlation exists in the data, a regression line can be found that will represent the line of best fit for the data. This equation can then be used to predictvaluesnot collected in the original data set. It is often useful to create a graph of the collected data to see...
You should use the abbreviation N/A when no relevant data or information is available. This could be because the answer doesn't exist (e.g., "what is the price of this item?") or because the question isn't relevant to what you're looking for (e.g., "what color is this item?"...
Of course, this set of values is very simple compared to data sets you’re likely to encounter in real life. In cases when there is too much data to look at all at once, there are often special tools (such as those used in spreadsheet software) that you can use to determine the me...