Example: Find the mean, median, mode and range of the following data set:

Mathematics

1 answer:

Gnom [1K]1 year ago

8 0

Answer:

Mean - 30.57 (rounded to the nearest hundredth)

Median - 26

Mode - 22

Range - 30

Step-by-step explanation:

The mean is all of the numbers added up divided by how many numbers there are. The median is the number in the middle when in ascending order. The mode is the number that occurs most often. The range is the largest number minus the smallest number.

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Please help!! I'll give 30 points and brainliest.

Valentin [98]

Step-by-step explanation:

$3 + \frac{9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{3 \times 4 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{12 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{21}{4} = \frac{9}{x+4} \\ \\ \therefore \:21(x + 4) = 36 \\ \\ \therefore \:21x + 84 = 36\\ \\ \therefore \:21x = 36 - 84\\ \\ \therefore \:21x = - 48\\ \\ \therefore \:x = \frac{-48}{21} \\ \\ \therefore \:x = \frac{-16}{7} \\ \\ \huge \red{ \boxed{ \therefore \:x = - 2 \frac{2}{7} }}\\ \\$