题目内容
The following statements have been made about linear regression analysisI It provides more accurate estimates than the high low techniquei It can only be used to estimate variable costii It assumes that cost behaviour is lineariv It only takes into account two observations of cost and outputWhich of the following statements about the use of linear regression analysis in cost estimation are true?
查看答案
搜索结果不匹配？点我反馈
更多问题
Which of the following correlation coefficients indicates the weakest relationship between two variables?
Which of the following is NOT a feasible value for the correlation coefficient?
Using data from 20 big cities in China, it has been calculated that the correlation between the level of car ownership and the number of road death is 0.80. Which of the statements shown follow from this?i. There is a strong relationship between the level of car ownership and the number of road deathsii. High levels of car ownership cause high levels of road deathsiii. 80% of the variation in the level of road deaths from one city to the next can be explained by the corresponding variation in the level of car ownershipiv. 64% of the variation in the level of road deaths from one city to the next can be explained by the corresponding variation in the level of car ownership
It was a gorgeous day and the beach was filled with people. What I witnessed there 1)___ me a lot.As I was 2)___ in the sun, a thin, shirtless man in skinny Jeans and sunglasses walked onto the beach and set down his things not too far from me. I didn’t think anything of it until a few minutes later he pulled out a shiny guitar and began to play the most 3)___ rock and roll I’d ever heard.I couldn't help trying to 4) ___ out who this guy was. This guitarist had the look of a true rock star and certainly had the talent of one, so I 5)___ thought he was somebody famous. But it turned out that he was just an ordinary local guy who loved to play the guitar and share his music with people. I was blown away that a guy with that much 6)___ wasn’t a famous musician, but then I quickly realized he didn’t need to be.Actually, you don’t have to be famous to be a rock star, do the things you love, and make a 7)___ in this world. Forget about getting on the cover of People magazine or in today’s 8)___. The guitarist on the beach beamed with happiness because he was enjoying something he loved to do and was sharing his music with us. Focus on following your 9)___ in life, planning for your future, and helping other people. Once you 10)___ your focus on your destination, everything will fall into place.A.relaxing B. inspired C.figure D.incredible E.talentF.passions G.depressed H.naturally I.set J.inevitableK.influence L.turn M.headlines N.found O. difference
微信支付 
支付宝支付