Recurrent upward and downward movements in a time series are called_________________. a. Secular Trend b. Irregular Variations c. Seasonal Variations d. Cyclical Variations

A time series is a collection of data that _______.   Multiple Choice   records past performance   records future performance   is limited to yearly data   is limited to quarterly data

year Income (S) B 1994 6036 85.1 20.4 1995 6113 87.8 20.2 Make a forecast of Mr. X's Income for the next five years 1996 6271 88.9 21.3 Make forecast of income for the given values of B =110 and P= 55 1997 6378 94.5 19.9 1998 6727 99.9 18 1999 7027 99.5 19.9 2000 7280 104.2 22.2 2001 7513 106.5 22.3 2002 7728 109.7 23.4 2003 7891 110.8 26.2 2004 8134 113.7 27.1 2005 8322 113 29 2006 8562 116 33.5 2007 9042 108.7 42.8 2008 8867 115.4 35.6 2009 8944 118.9 32.2 2010 9175 127.4 33.7 2011 9381 123.5 34.4 2012 9735 117.9 48.5 2013 9829 105.4 66.1 2014 9722 103.2 62.4 2015 9769 104.2 58.6 2016 9725 103.7 56.7 2017 9930 105.7 55.5 2018 10419 105.5 57.3 2019 10625 106.5 53.7 2020 10905 107.3 52.6

b and c part

TIMELINE OR LINE GRAPH The Timeline Graphs necessary for this exercise are also in Public Files/Mod1 A timeline or line graph shows trends over time. This study examines whether there is any relationship between the season of the year and suicide rates. These two line graphs show rates per 100,000.This study was based on data from Hong Kong only for the years 1980 to 1994. Line Graph images 1.5 1.0 Figure 1. Average total and sex-specific monthly suicide rates, 1980-1994. (I Total, • Male, A Female) 0.5 0.0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Month Suicides per 100,000

Part 2. Complete the following statements. A) The cumulative enrolment is the ________ of the enrolment of the intervals smaller than the interval in question or equal to the latter. The graph of cumulative enrolment is represented by a function in ___________. B) The average, median and mode are three measures of _________ ____________. C) The term ________ refers to any data that deviates disproportionately from others. D) When the residual values are zero, then the correlation is called _________

Find text or tools Use the information provided below to answer questions 24-25. INFORMATION The times series graph below shows information about the quarterly number of tourists from the European Union (EU) to vh Africa over the 2021-2023 period. The underlying trend line indicated by the dotted line is defined by the equation, y 703x-176 577. Time ones graph of quarterly number of tourists for EU to South 40000 REANDDIC 300000 2240 2010 200000 150000 18390 1000 0 2 --T Arica (2021-2023) 12920 30000 2013 8 10 1999 18 QUESTION 24 (4 marks) Using data from the graph, estimate the mean seasonal variation (or average seasonal effect) for quarter 4 (Q4) and use it to predict the number of tourists from the EU expected to visit South Africa in quarter 4 of 2024. A. The mean seasonal variation is -25 000; the number of tourists from the EU expected to visit South Africa in quarter 4 of 2024 is 322 825. B. The mean seasonal variation is 25 000, the number of tourists from the EU expected to…

#18

Ages Frequency 42-45 2 46-49 7 50-53 8 54-57 16 58-61 5 62-65 4 66-69 2 identify any possible outliers