tutorial7questions - EC2102 Macroeconomic Analysis I...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
EC2102 Macroeconomic Analysis I Tutorial 7, Week 11, March 28-April 1, 2011 Question 1 : Consider the following data, which are observations on x and y over several time periods: Period x y 1 100 500 2 200 500 3 200 1000 4 100 1000 5 50 500 6 50 250 7 100 250 ( a ) Construct a scatter plot of y against x . Are y and x positively correlated, negatively correlated, or uncorrelated? Explain your answer. ( b ) Now construct a time series of y and x . Is y a lagging, leading, or coincident variable with respect to x ? Explain your answer. ( c ) Do x and y exhibit persistence? Explain your answer assuming that the data are yearly data. Question 2 : From &gure 3.2 (Williamson, page 72), determine how many booms and recessions oc- curred from 1947-1976, and from 1977-2009, and calculate the average strength of booms and the average severity of recessions from 1947-1976, and from 1977-2009. To do this, count as peaks and troughs only those deviations from trend that exceed 2% . As a mea-
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/18/2012 for the course ECONOMICS 2102 taught by Professor Tan during the Spring '11 term at National University of Singapore.

Page1 / 3

tutorial7questions - EC2102 Macroeconomic Analysis I...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online