Determine the standard deviation (c) by filling in the table as part of your calculation.
consider the following data 6, 6, 10, 8, 10, 8
x
-
(x
- x 2
a. 1.63
b. 0.47
0.94
1.15
d.
select the best answer from the choices provided

The standard deviation

Step-by-step explanation:

Here, 6 values are given. Let the variable be X

Let, the values be where, i = 1(1)6

or i = 1 , 2, 3, 4, 5, 6 .

Here, the arithmetic mean is,

= ( 6 + 6 + 10 + 8 + 10 + 8)/6

= 8

Now,

= ( 36 + 36 + 100 + 64 + 100 + 64)/6

so, variance of X

= 2.67

so, standard deviation of X,

Hence, here, the answer is, 1.63 .

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

26

step-by-step explanation: