-6 -5(6x-4) Explain please

Mathematics

1 answer:

Zolol [24]2 years ago

7 0

$\qquad\qquad\huge\underline{{\sf Answer}}$

let's evaluate ~

$\qquad \sf \dashrightarrow \: - 6 - 5(6x - 4)$

$\qquad \sf \dashrightarrow \: - 6 - [(5 \cdot6x) - (5 \cdot4)]$

$\qquad \sf \dashrightarrow \: - 6 - (30x - 20)$

$\qquad \sf \dashrightarrow \: - 6 -30x + 20$

$\qquad \sf \dashrightarrow \: - 30x + 14$

I hope you understood the whole procedure ~

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The table shows data from a survey about the number of times families eat at restaurants during a week. The families are either

Anna11 [10]

Solution:

1. Rome

Minimum=0

Maximum=16

$Q_{1}=3, Q_{3}=13, {\text{IQR}=Q_{3}-Q_{1}=13-3=10,$

Median , $Q_{2}=8.5$

Mean = 8

Standard Deviation(σ)=5.4

As, difference between , Maximum -Mean =Mean - Minimum=8

So, Mean will Worthy description to find the center of Data set, given about Rome.

2. New York

Minimum=1

Maximum=20

$Q_{1}=4.5, Q_{3}=6, {\text{IQR}=Q_{3}-Q_{1}=6-4.5=1.5,$

Median , $Q_{2}=5.5$

Mean = 7.25

Standard Deviation(σ)=6.1

As, for New york , Mean is not the mid value, that is difference between Mean and Minimum is not same as Maximum and Mean.

As, you can see , the three Quartiles , $Q_{1},Q_{2},Q_{3}$ are very close to each other, it means , other data values are quite apart from each other. So, Mean will not appropriately describe the given data.So, in this case Median will suitable to find the center.