--- a/statistics/questions.rst Thu Oct 21 18:22:07 2010 +0530
+++ b/statistics/questions.rst Tue Oct 26 15:44:09 2010 +0530
@@ -8,15 +8,13 @@
sum
2. Calcutate the mean of the given list?
-
student_marks=[74,78,56,87,91,82]
mean(student_marks)
-3. Given a two dimensional list,::
+3. Given a two dimensional list,
two_dimensional_list=[[3,5,8,2,1],[4,3,6,2,1]]
-
how do we calculate the mean of each row?
@@ -27,7 +25,6 @@
std
5. Calcutate the median of the given list?
-
student_marks=[74,78,56,87,91,82]
median(age_list)
@@ -50,5 +47,10 @@
.. A minimum of 2 questions here (along with answers)
-1. Question 1
-2. Question 2
+1. Get the weighted mean of [74,64,86,76,83] where the weights are
+ [2,2,1,4,4] respectively.
+
+ Hint: Readup on function average using average?
+
+2. Calculate the weighted standard deviation for the sequence [74,64,86,76,83], such that the weights are [2,2,1,4,4] .
+