Don't hesitate anymore. The best time to invest is now. Employers are encouraged to B sales in the form. A travel accent is a person of business that arrange these people's holidays and then raise. Although the young man failed in starting his own business, he didn't lose face. The ...
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。
The mean of a data set is 40. If one value is removed, the mean becomes 35. What was the value that was removed? A. 25 B. 35 C. 45 D. 55 相关知识点: 试题来源: 解析 C。设去除的值为 x,原来的总和为 n×40,去除后总和为(n-1)×35,那么 n×40-(n-1)×35=x,化简可得 n×...
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C. The middle value when the data is arranged in order. D. The average value. 相关知识点: 试题来源: 解析 C。“median”在统计语境下指的是中位数,即把一组数据从小到大或从大到小排列后,处于中间位置的数。选项 A 是最高值;选项 B 是最低值;选项 D 是平均数。反馈 收藏 ...
The interquartile range (IQR) is the value of the 75th percentile (one of the quartiles) and the 25th percentile (another of the quartiles). Each...Become a member and unlock all Study Answers Start today. Try it now C...
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...
Themeanis theaverageof a data set. Themodeis the most common number in a data set. Themedianis the middle of the set of numbers. Of the three, the mean is the only one that requires a formula. I like to think of it in the other dictionary sense of the word (as in, it’s “...
Explore the definition of the center in a data set, and review options for finding it, including the mean and median. Finding Your Center Elizabeth is working on a science project. She is testing the effectiveness of bleach on certain types of stains. After trying the bleach on each stain...
The median is the middle number in a sorted list of numbers and can be more descriptive of that data set than the average. The median is sometimes used rather than the mean when there are outliers in the sequence that might skew the average of the values. ...