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
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 ...
If you have a data set with a wide range of numbers,knowing the mean cangive you a general sense of how these numbers could essentially be put together into a single representative value. For example, if you’re a high school student getting ready to take the SAT, you might be intereste...
Sample meanDot plotEmpirical cumulative distribution functionHistogramCumulative 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 ...
The mean of a set of numbers is bar(x). If each number is increased by lambda, then mean of the new set is :
7. The mean of a set of numbers(m-4),m,$$ ( m + 2 ) $$),2m,(2m+3) is 10.(a) Calculate(i) the value of m.$$ m = 7 $$(ii) the standard deviation. 4.980(b) Each number in the set of dat a is multiplied by 3 and then added by 2. Calculate the varian...
百度试题 结果1 题目 20. The mean of a set of 7 numbers is 3.6 and the mean of a different set of 18 numbers is 5.1. Calculate the mean of the 25 numbers. 相关知识点: 试题来源: 解析 4.68 反馈 收藏
he can tell by the sound if the fruit is ripe enough to be eaten or not. He works for a rural cooperative set up by a group of watermelon farmers, and puts thousands of watermelons through the "knock test" daily, b...
Find the median of a set of numbers. List the numbers from smallest to largest. Count how many numbers are in the set. Call this nn. Is nn odd or even? If nn is an odd number, the median is the middle value. If nn is an even number, the median is the mean of the two...
How to find the mean of a set of numbers without using the mean or sum functionsMATLAB Online で開くYou are disregarding the results for each row. You need to store them somewhere and then loop again to get the mean of all rows. Alternatively you could use s...