解析 B。本题考查平均数的计算。平均数是一组数据的总和除以数据的个数。这组数据的总和是 3+4+5+6+7=25,数据个数是 5,所以平均数是 25÷5=5。A 选项 4 小于正确平均数;C 选项 6 大于正确平均数;D 选项 7 大于正确平均数。反馈 收藏
HistogramCumulative histogramSummary The sample mean is sometimes depicted as a fulcrum placed under the Dot plot. We provide an alternative geometric visualization of the sample mean using the empirical cumulative distribution function or the cumulative histogram data....
EACH statement ALONE is sufficient. Statements (1) and (2) TOGETHER are NOT sufficient. 2The average (arithmetic mean) of a list of numbers is what percent of the sum of the numbers?(1) There are 8 numbers in the list.(2) The sum of the numbers in the list is 100.Statement (1...
The mean, or arithmetic mean, is the average value of a set of numbers.More specifically, it's the measure of a "central" or typical tendency in a given set of data. Mean—often simply called the "average"—is a term used in statistics and data analysis. In addition, it's not unus...
GMAT 考满分题库The average (arithmetic mean) of y numbers is x. If 30 is added to the set of numbers, then the average will be x - 5. What is the value of y in terms of x ?
The mean of a set of numbers {4, 6, 8} is? A. 6 B. 7 C. 8 D. 9 相关知识点: 试题来源: 解析 B。平均数等于所有数的和除以数的个数,(4+6+8)÷3=18÷3=6,所以答案是 7 的选项 B 错误;选项 A6 是正确的平均数;选项 C8 和选项 D9 不是平均数。反馈 收藏 ...
Arithmetic mean: the mean of a set of data consisting of n numbers is the sum of numbers in the set divided by n. x bar Median: the number is the middle when the data are arranged in order from least to greatest.when there are two median numbers, the median is their mean. ...
There is a set of numbers:(1) The mean is . (2) The median is . (3) The mode is . 相关知识点: 试题来源: 解析 (1) 22 (2) 21 (3) 29 (1) (13+29+18+21+29)÷5=22 (2) Arrange the numbers from least to greatest: 13, 18, 21, 29, 29. The median is 21. (3) 29...
The average (arithmetic mean) of a list of numbers is what percent of the sum of the numbers?(1) There are 8 numbers in the list.(2) The sum of the numbers in the list is 100.Statement (1) ALONE is sufficient,but statement (2) alone is not sufficient....
The mean is the average of the numbers. ... It is easy to calculate add up all the numbers, then divide by how many numbers there are.