pilotmike327 wrote:
Not sure if this is the right place to ask. On page 48 for the step-by-step solution for question 8, underneath the portion of the explanation where it shows the formula average=sum of values/ number of values, it starts with 2/5d + 2/10d divided by 2. Shouldnt it be 1/10d instead of 2/10d?
Dear
pilotmike327,
I'm happy to respond.
Yes, it is a bit tricky to know where to ask about a possible typo in the
OG: this sub-forum is as good a place as any.
I am sitting here with the OG2017 open, and on p. 48, I see
\(j = \frac{1}{2}(\frac{2}{5}d) = \frac{1}{10}d\)
In other words, I see the correct math, not the typo you describe. This problem is from the Diagnostic Test, which has remained unchanged through several successive editions of the
OG. Take a look at the page again. I believe everything is error free.
Mike
_________________
Mike McGarry
Magoosh Test PrepEducation is not the filling of a pail, but the lighting of a fire. — William Butler Yeats (1865 – 1939)