Lesson 2: A Skewed Reality
A gym surveys its members about the average number of hours they spend at the gym each week. The data are recorded in the dot plot shown.
To describe the mean of a data set you need to calculate x, which is read as “x bar.”
Lesson 2: A Skewed Reality
Lesson 2: A Skewed Reality
To describe the median of a data set, determine the middle number in a data set when the values are placed in order from least to greatest or greatest to least.
Lesson 2: A Skewed Reality
1. Analyze the data collected from the gym members in the

Remark
The very first thing you should do with a question like this is get the graph. Then you will know what you are looking for. I have provided you with such a graph. Your table should center around -2 ≤ x ≤ -1

So let's set up a table and see what we get. Start with y = x + 5

x             x + 5
-1           4
-1.25      3.75
-1.5        3.5
-1.75      3.25
-2           3

Do the same thing for - (3)^x + 4 See below to see how this is entered your calculator

x            -(3)^x + 4
-1           3.66
-1.25      3.75
-1.5        3.8
-1.75      3.85
-2           3.89

Conclusion
When x = - 1.25 y = 3.75 for both graphs. <<<< Answer

Footnote
You may not be familiar with how to put this in your calculator. This is the way I would do it. I'm only doing it for y = -(3^x) + 4

Let x = - 1.25
3
^ Note your calculator might have x^y or y^x. You'll have 1 of the three.
1.25
+/- 
=
X
1
+/-
=     At this point you should have -0.25
+
4
= 
That gives you 3.75