1. Las calificaciones obtenidas por un grupo de 30 alumnos de 3º ESO en una prueba de Matemáticas vienen dadas por la tabla inferior.

nota
2
3
4
5
6
7
8
9
10
nº al.
1
2
3
7
5
6
3
2
1

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

brandon has 4344 video games.  

step-by-step explanation

7373 - 2929 = 4344

pls let me know if it was correct

step-by-step explanation: