Quantitative easing efforts are looking high from other central banks. The correct hypothesis test for a normal distribution of the random variable is the Z-test, which is calculated as: $$ z-statistic=\frac { X-{ \mu }_{ 0 } }{ \frac { \sigma }{ \sqrt { n } } } $$ A key difference between QE and normal expansionary monetary policy is that with QE central banks also buy other bonds besides short-term government bonds; they buy corporate bonds and long term government bonds. Fig 1 Quantitative Easing programs ongoing in Emerging Markets % GDP Poland Croatia Chile Hungary Turkey S Africa Romania Indonesia Colombia Philippines . There are two types of errors that could occur when running a hypothesis test. It refers to how symmetrical a data’s distribution is relative to a completely symmetrical normal distribution. QE done 4.5 4.0 2.6 0.5 1.2 0.6 0.3 0.9 1.1 0.3 QE target 9.5 8.0 4.0 3.0 2.0 2.0 1.5 1.5 1.1 0.4 . $$ X=sample\quad mean $$ So, the Fed has to monetize the debt via quantitative easing. $$ { \left( 1\ast 2\ast 3\ast 4 \right) }^{ \frac { 1 }{ 4 } }=2.21 $$, The Harmonic Mean of the numbers \( \left\{ { 1,2,3,4 } \right\} \) is: Quantitative easing (QE) is a form of monetary policy used by central banks as a method of quickly increasing the domestic money supply and spurring economic activity. Download study notes in a PDF file immediately. Quantitative easing as we know it is a kind of monetary policy use by the central bank of a country to stimulate the economy when other conventional methods are not working. Start studying for CFA®, FRM® or actuarial exams right away! $$ N=number\quad of\quad observations $$ You won’t often have to do the formulas written out by hand, but be familiar with them because the logic here applies to many other applications through this topic area. Megan E. Greene, Global Chief Economist Manulife Investment Management Policy options open to the European Central Bank to rein in further increases in the value of the euro include cutting interest rates, signaling more quantitative easing or publicly advising against allowing it to rise, a tactic used by former ECB chief Mario Draghi. Accessed July 26, 2020. The curriculum specifies several methods of tracking and managing risk exposures using quantitative means. It is different from the traditional policy of buying or selling government bonds to keep market interest rates at a specified target value. They incorporate a trade-off of value range and confidence, such that the smaller the area in which the value is believed to exist, the lower the confidence that it is actually there. It also turned out to be the principal cure. $$ {} & Stocks & Bonds \\ $$ Skewness=\frac { \Sigma { \left( { X }_{ i }-X \right) }^{ 3 } }{ { s }^{ 3 } } \ast \frac { 1 }{ n } $$. The formulas for these are as follows: $$ PV\quad Annuity=\frac { \left( 1-{ V }_{ n } \right) }{ r } $$ Quantitative easing (QE) is a monetary policy of printing money, that is implemented by the Central Bank to energize the economy. The components of the interest rate (risk free, inflation, default risk, and other risk premiums) You should expect, however, to be calculating correlations, which use the following formula: $$ Correlation\left( { R }_{ a },{ R }_{ b } \right) =\frac { Covariance\left( { R }_{ a },{ R }_{ b } \right) }{ StdDev\left( { R }_{ a } \right) \ast StdDev\left( { R }_{ b } \right) } $$. Kurtosis refers to the degree to which a data set is distributed, relative to the Normal Distribution. Otherwise, we fail to reject the null hypothesis. Comprehensive study notes that are based on the CFA Institute's study guide for the 2021 CFA Level I Exam. There are several types of distributions you will need to understand, and this includes understanding a few common kinds of randomly distributed variables. For hypothesis testing a population mean when the population variance is unknown and the sample size is large, a T-test is more appropriate: $$ { t }_{ n-1 }=\frac { X-{ \mu }_{ 0 } }{ \frac { s }{ \sqrt { n } } } $$ Quantitative Easing (QE) is like expansionary monetary policy on steroids. $$ { \sigma }_{ 0 }=Hypothesized\quad mean\quad of\quad the\quad population $$ Source: ING estimates . If the calculated P-value is lower than the level of significance, then we can reject the null hypothesis. In quantitative easing (QE), a central bank buys any financial assets to inject money into the economy. $$ S=sample \quad standard \quad deviation $$ $$ P\left( { E }_{ j } \right)=prior\quad probabilities $$ The t-distribution is symmetrical about its mean and has thicker tails than the normal distribution. The Safety First Ratio is expressed as the excess return of the portfolio (expected returns – threshold returns) divided by portfolio risk (standard deviation): $$ SF\quad Ratio=\frac { E\left( { R }_{ p } \right) -{ R }_{ L } }{ { \sigma }_{ p } } $$. Another important component of hypothesis testing is the P-Value. One way to calculate potential outcomes using a Bernoulli approach is known as a Binomial Tree: In this case, each final outcome is seen as successive iterations of Bernoulli events. Type 1 error occurs when we reject a true null hypothesis and Type 2 error occurs when we fail to reject a false null hypothesis. $$ FV=Future\quad value $$ October 14, 2019 in CFA® Program by Michael Abbe. Year\quad 1 & Year\quad 2 & Year\quad 3 & Mean \\ Quantitative Methods are covered in Study Sessions 2 and 3, which have a combined weighting of 12% on the Level 1 CFA exam. 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