Luis is a professional musician. He needs to buy an upgraded used guitar for his work. He
found the following prices for the same make
and model used guitar for his work:
$699.20,$700.30,$680.50,$700.30, and
$800.25.
EXPRESS THE FORMULA FOR THE MEAN
USING SIGMA NOTATION AND CALCULATE
THE MEAN, THE MEDIA AND THE MODE.

Step-by-step explanation:

The following prices for the same make  and model used guitar for his work are :

$699.20,$700.30,$680.50,$700.30, and  $800.25.

Mean of ungrouped data = sum of observations/total no of observations

For median, arrange the given data in ascending order.

$680.50, $699.20, $700.30, $700.30, $800.25

Median = middle value

Median = $700.30

The value that comes most often is called mode.

$700.30 comes two times. So, mode is $700.30

Hence, Mean = $716.11, median = $700.30 and mode = $700.30

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph