Seasonal Variations, Business Mathematics and Statistics Video Lecture - Business Mathematics and Statistics - B Com

hello dear students welcome in the
esthetician today we will explain the
moving average moving average is the one
of important method of measurement of
trends so if you want to my other two
ender you need to calculate a moving
average first of all we should know the
meaning of moving average moving average
average is the error of any subset of
numbers
it is very useful
for measuring long-term trend trend
suppose we have ten years god ah yes and
this is a 2001 2002 2003 2004 2005 2006
2007 2008 2009 and 2010 first of all we
calculate the specific years moving
average means as two years moving hours
three years moving average four years
new moving average this is for six
millions dollar five eight nine five
four three seven eight one two three
four five six seven eight nine ten
first of all suppose we are converting a
five years moving average here moving
average
we just take $5 one two three four five
this is a five years in the middle
number is five which is between the 2001
to 2005 we just total 4 plus 6 plus 5
plus 8 plus 9 divided by 5 4 6 10 10
plus 5 over 15 15 plus 8 15 plus 5 over
20 23 23 plus minus 32 this is 32
divided by 5 and this is a six pointer
this is a 13 26.4 now we left Earth
first year number and then we take next
five years so we are seeing the moving
average is move from first year to next
five years
this is moving this is total five years
and now we have 2002 to 2006 the end is
middle number is 2004
and we show six five plus eight plus
nine plus five
this is a five numbers divided by five
six five 11 11 Plus 8 19 19 plus 9 19
plus 120 28 28 plus 2 30 30 plus 3 33
divided by 5 and this is a 36.6 like
this now we left second-years number and
then we calculate moving average by
taking the subset of 2000 to 2003 to
2007 and in the middle of 2005 we show
here 5 8 9 5 4 divided by 5 5 8 13 13
plus 9 22 22 plus 5 27 27 plus 4 27 plus
3 30 31 dirt fire this is a 6.2 like
this we calculate a full five years
moving average okay now we will explain
the moving average
moving average then there are even
number number as moving the average ever
at that time we will write the average
between two numbers and then we
calculate again the I wish and show in
the front of further year suppose we
have seniors years 2001 2002 2003 2004
2005 2006 2007 2008 2009 2010 and we
have the say Tata 4 6 5 8 9 5 4 6 7 8 we
are taking first subset of four years
this is four years
moving average and in the mid of 2002
and 2003 we will show 4 plus 6 plus 5
plus 8 divided 4 4 6 10 10 plus 5 15 15
plus 8 15 plus 5 20 + 3 xx 3 divided by
4 this is a 5 and this is a 7 and now we
again lift first year number and again
we calculate the average over four years
and in the middle of 2003 and 2004 we
show here 6 plus 5 plus 8 plus 9.46 5 11
of 11 Plus 8 19 19 plus 9 28 divider 28
divided by 4 this is a seven now we
again lifted 2002 and take earth dot
output 2006 and in the mid of 2004-2005
we take her die with this is a 5 8 9 5
divider Oh 5 plus 8 13 + 9 22 + 5 27 24
this is a this is a six and four 3:37
now like this we continue the process
and now we take the average of this and
in the middle
made offer this's 2002 and this is a
middle of first 2002 and this this is a
data and this is a middle for 2003 a3
this data we take the total and enough
in the front of 2003 we show five points
point seven plus seven twenty two in the
front of 2003 like this we show that a
top this is a five seven twelve twelve
twelve point seven twenty two and this
will be six pointer three and this will
be six point three okay like this in the
even number of years moving average we
just calculate the four years moving
heaven and then again we calculate the
average in the front of the years
thank you very much