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iVinArrow [24]
3 years ago
11

For the following list of data, calculate (a) the mean, (b) the median, and (c) the mode or modes (if any) 1.8, 5, 6.3, 8 ,8, 4.

8, 2.8, 4.8
(a) The mean is
Mathematics
1 answer:
disa [49]3 years ago
7 0

Answer:

(a) The mean is:

The sum of the values: 1.8 + 5 + 6.3 + 8 + 8 + 4.8 + 2.8 + 4.8 = 41.5

The sum divided by the number of values: 41.5 ÷ 8 = 5.1875

(b) The median is:

The values in numerical order: 1.8, 2.8, 4.8, 4.8, 5, 6.3, 8, 8

The mean of the two middle values: (4.8 + 5) ÷ 2 = 4.9

(c) The mode is:

The values in numerical order: 1.8, 2.8, 4.8, 4.8, 5, 6.3, 8, 8

The values that repeat most often: 4.8, 8 (both appear twice)

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Answer:

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Step-by-step explanation:

Solve for x:

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Put each term in (-11 x)/54 - 1/2 over the common denominator 54: (-11 x)/54 - 1/2 = (-27)/54 - (11 x)/54:

(-27)/54 - (11 x)/54 = 0

(-27)/54 - (11 x)/54 = (-11 x - 27)/54:

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Multiply both sides of (-11 x - 27)/54 = 0 by 54:

(54 (-11 x - 27))/54 = 54×0

(54 (-11 x - 27))/54 = 54/54×(-11 x - 27) = -11 x - 27:

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(-11)/(-11) = 1:

x = 27/(-11)

Multiply numerator and denominator of 27/(-11) by -1:

Answer:x = (-27)/11

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