Here are the average mathematics achievement scores for ninth graders in 32 counties.Find the standard deviation. $$\begin{array} { l l l l l l l l }
599 & 585 & 574 & 572 & 569 & 565 & 564 & 551 \
539 & 534 & 531 & 528 & 525 & 524 & 519 & 501 \
488 & 480 & 478 & 475 & 471 & 465 & 458 & 443 \
427 & 410 & 409 & 389 & 380 & 382 & 355 & 314
\end{array}$$
A)75.3
B)75
C)73.3
D)74.3
E)75.5

Question

Here are the average mathematics achievement scores for ninth graders in 32 counties.Find the standard deviation. $$\begin{array} { l l l l l l l l } 
599 & 585 & 574 & 572 & 569 & 565 & 564 & 551 \
539 & 534 & 531 & 528 & 525 & 524 & 519 & 501 \
488 & 480 & 478 & 475 & 471 & 465 & 458 & 443 \
427 & 410 & 409 & 389 & 380 & 382 & 355 & 314
\end{array}$$
A)75.3
B)75
C)73.3
D)74.3
E)75.5

Quizplus · Accepted Answer

The Answer of Here are the average mathematics achievement scores for ninth graders in 32 counties.Find the standard deviation. $$\begin{array} { l l l l l l l l } 
599 & 585 & 574 & 572 & 569 & 565 & 564 & 551 \
539 & 534 & 531 & 528 & 525 & 524 & 519 & 501 \
488 & 480 & 478 & 475 & 471 & 465 & 458 & 443 \
427 & 410 & 409 & 389 & 380 & 382 & 355 & 314
\end{array}$$
A)75.3
B)75
C)73.3
D)74.3
E)75.5

Here Are the Average Mathematics Achievement Scores for Ninth Graders