Analyst at R?


Warning: count(): Parameter must be an array or an object that implements Countable in /home/styllloz/public_html/qa-theme/donut-theme/qa-donut-layer.php on line 274
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There is a file in this format orders_class.txt:
orderItemID;orderDate;deliveryDate;itemID;size;color;manufacturerID;price;customerID;salutation;dateOfBirth;state;creationDate 1;2013-04-01;2013-04-03;2347;43;magenta;1;89.90;12489;Mrs;1963-04-26;Hesse;2012-04-23 2;2013-04-01;2013-04-03;2741;43;grey;1;99.90;12489;Mrs;1963-04-26;Hesse;2012-04-23 3;2013-04-01;2013-04-03;2514;9;ecru;19;79.90;12489;Mrs;1963-04-26;Hesse;2012-04-23 4;2013-04-01;2013-05-06;2347;42;brown;1;89.90;12489;Mrs;1963-04-26;Hesse;2012-04-23 5;2013-04-01;?;2690;43;grey;1;119.90;12489;Mrs;1963-04-26;Hesse;2012-04-23 6;2013-04-01;2013-04-02;2318;41;blue;1;89.90;3649;Mrs;1956-03-26;Hesse;2013-04-01 7;2013-04-01;2013-04-22;2590;7+;white;57;99.90;3649;Mrs;1956-03-26;Hesse;2013-04-01 8;2013-04-01;2013-06-13;2656;41;magenta;1;79.90;3649;Mrs;1956-03-26;Hesse;2013-04-01

need to open in R Studio for further processing, some fields have ? the question mark:
31;2013-04-01;2013-04-02;2875;m;blue;3;24.90;82791;Mrs;?;Baden-Wuerttemberg;2013-03-15

for example to calculate average prices
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