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#1
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etsimate values of a linear trend for each pair of known values
Hi,
is there a way to automatically fill in the blank cells between two numbers in a column B using a linear regression between those two points based on culumn A? Column A, B1, B5 and B7 are given. Column C (or B) should contain the results. I could use "b1+(b$5-b$1)/(ROW(b$5)-ROW(b$1))", but then I have to change the formula after each pair of values B and my data go for 3 years... A B C 1-jan 10 10 2-jan 12,5 3-jan 15 4-jan 17,5 5-jan 20 20 6-jan 14 7-jan 8 8 8-jan 9-jan Thanks Maarten |
#2
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etsimate values of a linear trend for each pair of known values
1) copy the data to another sheet (say A1:B5000)
2) use sort or filter to remove rows with blank values (leaving A1:B1000) 3) name the range with the dates as mydates (say A1:A1000), the range with number (say B1:B1000) myvalues, the entire range (say A1:B1000) mytable 4) On the main sheet, replace C2 with =IF(B20,B2,INDEX(myvalues,MATCH(A2,mydates))+(IND EX(myvalues,MATCH(A2,mydates)+1)-INDEX(myvalues,MATCH(A2,mydates)))/(INDEX(mydates,MATCH(A2,mydates)+1)-INDEX(mydates,MATCH(A2,mydates)))*(A2-INDEX(mydates,MATCH(A2,mydates)))) Actally this works except for the last few rows of your data (when there is no second date to follow) =INDEX(myvalues,MATCH(A2,mydates))+(INDEX(myvalues ,MATCH(A2,mydates)+1)-INDEX(myvalues,MATCH(A2,mydates)))/(INDEX(mydates,MATCH(A2,mydates)+1)-INDEX(mydates,MATCH(A2,mydates)))*(A2-INDEX(mydates,MATCH(A2,mydates))) It worked well for me best wsihes -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Maarten" wrote in message ... Hi, is there a way to automatically fill in the blank cells between two numbers in a column B using a linear regression between those two points based on culumn A? Column A, B1, B5 and B7 are given. Column C (or B) should contain the results. I could use "b1+(b$5-b$1)/(ROW(b$5)-ROW(b$1))", but then I have to change the formula after each pair of values B and my data go for 3 years... A B C 1-jan 10 10 2-jan 12,5 3-jan 15 4-jan 17,5 5-jan 20 20 6-jan 14 7-jan 8 8 8-jan 9-jan Thanks Maarten |
#3
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etsimate values of a linear trend for each pair of known values
forgot: you need to format C2 as General (or number as needed)
copy down the column -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Bernard Liengme" wrote in message ... 1) copy the data to another sheet (say A1:B5000) 2) use sort or filter to remove rows with blank values (leaving A1:B1000) 3) name the range with the dates as mydates (say A1:A1000), the range with number (say B1:B1000) myvalues, the entire range (say A1:B1000) mytable 4) On the main sheet, replace C2 with =IF(B20,B2,INDEX(myvalues,MATCH(A2,mydates))+(IND EX(myvalues,MATCH(A2,mydates)+1)-INDEX(myvalues,MATCH(A2,mydates)))/(INDEX(mydates,MATCH(A2,mydates)+1)-INDEX(mydates,MATCH(A2,mydates)))*(A2-INDEX(mydates,MATCH(A2,mydates)))) Actally this works except for the last few rows of your data (when there is no second date to follow) =INDEX(myvalues,MATCH(A2,mydates))+(INDEX(myvalues ,MATCH(A2,mydates)+1)-INDEX(myvalues,MATCH(A2,mydates)))/(INDEX(mydates,MATCH(A2,mydates)+1)-INDEX(mydates,MATCH(A2,mydates)))*(A2-INDEX(mydates,MATCH(A2,mydates))) It worked well for me best wsihes -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Maarten" wrote in message ... Hi, is there a way to automatically fill in the blank cells between two numbers in a column B using a linear regression between those two points based on culumn A? Column A, B1, B5 and B7 are given. Column C (or B) should contain the results. I could use "b1+(b$5-b$1)/(ROW(b$5)-ROW(b$1))", but then I have to change the formula after each pair of values B and my data go for 3 years... A B C 1-jan 10 10 2-jan 12,5 3-jan 15 4-jan 17,5 5-jan 20 20 6-jan 14 7-jan 8 8 8-jan 9-jan Thanks Maarten |
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