Reading 7: Statistical Concepts and Market Returns-LOS k习题 following, statements, concerning, div, class

bmaggie

Session 2: Quantitative Methods: Basic Concepts
Reading 7: Statistical Concepts and Market Returns

LOS k: Define and interpret measures of sample skewness and kurtosis.

 

 

 

Which of the following statements concerning skewness is least accurate? A distribution with:

A) a distribution with skew equal to 1 is not symmetrical.

B) positive skewness has a long left tail.

C) negative skewness has a large number of outliers on its left side.

jingh1981

thanks

wuliaosile

爆料:经典逗女孩子的暴笑短信
　
　　1.黑猩猩不小心踩到了长臂猿拉的大便，长臂猿温柔细心地帮其擦洗干净后它们相爱了。别人问起他们是怎么走到一起的？黑猩猩感慨地说：猿粪！都是丰胸啊！
　　2.我说：“你是猪。”你说：“我是猪才怪！”从此我就叫你猪才怪。终于有一天，你忍不住当着众人的面对我吼道：“我不是猪才怪！”
　　3.明天你醒来，枕边躺着一只蚊子，身边有一封遗书，上书：我奋斗了一晚韩式双眼皮，也没能刺破你的脸，你的脸皮厚得让我无颜活在这世上！主啊~宽恕他吧！我是自杀的。
　　4.一日 一对苍蝇母子在一起吃午餐,儿子问苍蝇妈妈:为什么我们每天都吃大便啊!苍蝇妈妈生气的说:吃饭的时候不要说这么恶心的话,趁热吃!!
　　5.一大学生被敌人抓了，敌人把他绑在了电线杆上，然后问他：说，你是哪里的？不说就电死你！大学生回了敌人一句话，结果被电死了，他说：我是电大的！  内容来自
　　6.两个饺子结婚了，送走客人后新郎回到卧室，竟发现床上躺着一个肉丸子！新郎大惊，忙问新娘在哪？肉丸子害羞的说：讨厌，人家脱了衣服你就不认识啦！
　　7.四只老鼠吹牛：甲：我每天都拿鼠药当糖吃；乙：我一天不踩老鼠夹脚发痒；丙：我每天不过几次大街不踏实；丁：时间不早了，回家抱猫去咯...
　　 8.某晚，一裸男叫了一辆出租车，女司机目不转睛盯着看他，裸男大怒，吼道去下颌角：你他妈没见过裸男呀！女司机也大怒：我看你他妈从哪儿掏钱！
　　 9.你那边有没有电视啊?现在快点看中央一台赵本山被炸死了,pol.ice封锁了东北,19人死亡,11人失踪,1人被忽悠!
　　 10.一醉汉不慎从三楼掉下,引来路人围观,一pol.ice过来:发生什么事?醉汉:不清楚,我也是刚到...
　　11.有个腼腆的男孩终于鼓足勇气问心爱的女孩：你喜欢什么样的男孩子？女孩说双眼皮：投缘的。男孩再问还是一样，他只好伤心地说：头扁一点的不行吗？  copyright  
　　12.狼崽从出生就吃素。狼爸狼妈绞尽脑汁训练狼崽捕猎。终于有天狼爸狼妈欣慰地看到儿子狂追兔子。狼崽抓住兔子凶相毕露恶狠狠地说：小子！把胡萝卜交出来！
　　13.拉面店柜台前，一位漂亮女孩正排队等候。到她时，拉面师傅问：你要粗的还是细的？女孩答：你拉什么我就吃什么。
　　 14.一对男女偷情，丈夫突然回家，男的没顾穿衣服就跳窗逃跑，走在大街上路上围观，男的装着若无其事看天：啊，这就是地球呀。路人说：cao，装鸡毛外星人。
　　15.白兔Q B灰狼后逃走，狼愤慨急追，兔以土抹身扮灰兔，戴眼镜看报纸，狼问全面部拉皮：可看到一白兔？兔：是那只强*狼的白兔吗？狼羞：我KAO，这么快就见报了？

kison

xx

zaestau

c

bmaggie

A distribution that has positive excess kurtosis is:

A) more skewed than a normal distribution.

B) less peaked than a normal distribution.

C) more peaked than a normal distribution.

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A distribution with positive excess kurtosis is one that is more peaked than a normal distribution

bmaggie

Which of the following statements about skewness and kurtosis is least accurate?

A) Positive values of kurtosis indicate a distribution that has fat tails.

B) Kurtosis is measured using deviations raised to the fourth power.

C) Values of relative skewness in excess of 0.5 in absolute value indicate large levels of skewness.

bmaggie

Which of the following statements about skewness and kurtosis is least accurate?

A) Positive values of kurtosis indicate a distribution that has fat tails.

B) Kurtosis is measured using deviations raised to the fourth power.

C) Values of relative skewness in excess of 0.5 in absolute value indicate large levels of skewness.

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Positive values of kurtosis do not indicate a distribution that has fat tails. Positive values of excess kurtosis (kurtosis > 3) indicate fat tails.

bmaggie

A distribution that is more peaked than normal is:

A) skewed.

B) platykurtic.

C) leptokurtic.

bmaggie

A distribution that is more peaked than normal is:

A) skewed.

B) platykurtic.

C) leptokurtic.

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A distribution that is more peaked than normal is leptokurtic. A distribution that is flatter than normal is platykurtic.