If the average (arithmetic mean) of 10, 20, 30, 40, and x is 60, what is the value of x (A) 50 (B) 60 (C) 100 (D) 150 (E) 200 免费查看参考答案及解析 题目: If the average (arithmetic mean) of x and y is 40, and z-x=60, what is the average of y and z ?() ...
2. Find the mean percentage of the work completed for a project in a country from the following frequency distribution by using the step-deviation method. 相关知识点: 试题来源: 解析 Class Class Frequency Intervals Mark = = ()0 - 20 10 -40 -2 15 -3020 - 40 30 -20 -1 45 -4540 -...
the arithmetic mean of a set of numbers {10, 20, 30, 40} is (10 + 20 + 30 + 40)/4 = 25. Let’s understand the meaning of the term "mean", followed by arithmetic with a few solved examples in the end.
Suppose that we will take a random sample of size 25 from a population with mean 65 and variance 100. What is the standard deviation of the sampling distribution of the sample mean? Calculate the mean for samples for which the sample size and x are given below. a) n = 10, x = 86 ...
10. mean person:邪恶的人 11. mean time:特定的中间时间,即各种事物之间的平均时间 12. be meant for someone:适合某人 13. means of communication:交流方式 14. the end justifies the means:只要目的合理,手段可以不择手段 15. means test:资格审查 16. a means to an end:达到某个目标的手段 17. wi...
为了不麻烦大家,以下动词中,把不规则的写出来就可以了,规则的不用写了,但要100%准确哦~1.exercise 2.skateboard 3.surf 4.believe 5.camp 6.plan 7.hike 8.depend 9.worry(好像是变为worried,但是worried 好像也是adj.)10.mean 11.laugh 12.care 13.peel 14.pour 15.mix 16.boil 17.check 18.hiccup...
In the word of mathematics, the standard deviation of the given data is used to calculate the spread of the given data corresponding to the mean value of the data. Standard deviation is generally used in the probability section of mathematics. The formula of the standard...
The mean of 10 observations was calculated as 40. It was detected on rechecking that the value of 45 was wrongly copied as 15. Find the correct mean. View Solution The average height of 30 boys was calculated to be 150 cm. it was detected later that one value of 165 cm was wrongly ...
优选的幅员是10 × 10 ×10, 20 × 20 ×20, 30 ×30 ×30, 40 ×40 ×40, 50×50×50和60×60×60。 表v展示在这些意味表现优选的幅员。 相关内容 aA. the writer was very successful in his life [translate] aThe issues related to standards and education is outside the direct scope of ...
Zoom Range 20% The Sonu camera gets 8 (out of 10) for Image Quality, 6 for Battery Life and 7 for Zoom Range The Conan camera gets 9 for Image Quality, 4 for Battery Life and 6 for Zoom Range Which camera is best? Sonu: 0.5 × 8 + 0.3 × 6 + 0.2 × 7 = 4 + 1.8 + 1.4...