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Consider the Following Test Scores Obtained by a Class "> cellpadding="0" cellspacing ="0" width =52% " border =0">\text { cellpadding="0" cellspacing }=" 0 " \text { width }=52 \% \text { " border }=0 ">

Question 239

Multiple Choice

Consider the following test scores obtained by a class: "> cellpadding="0" cellspacing ="0" width =52% " border =0">\text { cellpadding="0" cellspacing }=" 0 " \text { width }=52 \% \text { " border }=0 ">
 Test Score  Frequency 9028057010605503\begin{array} { l l } \text { Test Score } & \text { Frequency } \\90 & 2 \\80 & 5 \\70 & 10 \\60 & 5 \\50 & 3\end{array} Find the variance and standard deviation, rounded to the nearest hundredth.


A) variance: 119.36119.36 standard deviation: 10.9310.93
B) variance: 10.9310.93 standard deviation: 119.36119.36
C) variance: 69.2069.20 standard deviation: 10.9310.93
D) variance: 69.2069.20 standard deviation: 119.36119.36
E) variance: 100.00100.00 standard deviation: 10.0010.00

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