9,13,43,55 what is the mean absolute deviate (MAD) of their ages

Answers

Answer 1

Answer:

The mean absolute deviation (MAD) of their ages is 19 and this can be determined by using the formula of mean absolute deviation.

Given :

Ages - 9 , 13 , 43 , 55

The meanabsolute deviation is given by the formula:

$\rm MAD = (1)/(n)\sum^(n)_(i=1)|x_i-m(X)|$

where n is the total number of data values, $x_i$ is the data value in the set, and m(X) is the average value of the data set.

So, to find MAD first evaluate the value of m(x).

$\rm m(X) = (9+13+43+55)/(4)$

m(X) = 30

Now, the MAD of their ages is:

$\rm MAD = (|9-30|+|13-30|+|43-30|+|55-30|)/(4)$

$\rm MAD=(21+17+13+25)/(4)$

MAD = 19

So, the mean absolute deviation (MAD) of their ages is 19.

For more information, refer to the link given below:

brainly.com/question/7851768

Answer 2

Answer:

Answer:

The mean absolute deviation of this data $\{9,13,43,55\}$ is $MAD =19$ .

Step-by-step explanation:

The mean absolute deviation (MAD) of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.

The steps to find the MAD include:

find the mean (average)
find the difference between each data value and the mean
take the absolute value of each difference
find the mean (average) of these differences

To find the mean absolute deviation of this data $\{9,13,43,55\}$ you must

Step 1: Calculate the mean.

$\:mean=\bar{x}= (9+13+43+55)/(4) =(120)/(4)=30$

Step 2: Calculate the distance between each data point and the mean and take the absolute value of each difference.

$|9-30|=21\n|13-30|=17\n|43-30|=13\n|55-30|=25$

Step 3: Add the distances together.

$21+17+13+25=76$

Step 4: Divide the sum by the number of data points.

$MAD = (76)/(4) =19$

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Answers

Answer:

Step-by-step explanation:

Mae, Elsa, Rodley, Cristina, Christian

Judging on the basis of experience, a politician claims that 57% of voters in a certain area have voted for an independent candidate in past elections. Suppose you surveyed 25 randomly selected people in that area, and 18 of them reported having voted for an independent candidate. The null hypothesis is that the overall proportion of voters in the area that have voted for an independent candidate is 57%. What value of the test statistic should you report?

Answers

Answer: z= 1.51

Step-by-step explanation:

Test statistic for proportion is given by :-

$z=\frac{p-P}{\sqrt{(PQ)/(n)}}$

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Given : P=57% = 0.57

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Test the following numbers for divisibility by 3, 5, 6 and 11. (Do not divide or factorise.) a) 68 979

Answers

Final answer:

The number 68,979 is divisible by 3 but not by 5, 6, or 11.

Explanation:

To test a number for divisibility by 3, we sum up its individual digits. If the sum is divisible by 3, then the number itself is divisible by 3. For the number 68,979, the sum of its digits is 6 + 8 + 9 + 7 + 9 = 39. Since 39 is divisible by 3, 68,979 is also divisible by 3.

To test a number for divisibility by 5, we simply check if the last digit is either 0 or 5. In the number 68,979, the last digit is 9, which is neither 0 nor 5. Therefore, 68,979 is not divisible by 5.

To test a number for divisibility by 6, we need to check if it is divisible by both 2 and 3. From the previous tests, we already know that 68,979 is divisible by 3, so we now need to check if it is divisible by 2. Since the last digit is 9, which is an odd number, 68,979 is not divisible by 2, and therefore not divisible by 6.

To test a number for divisibility by 11, we take the alternating sum of its digits. In this case, we have 6 - 8 + 9 - 7 + 9 = 9. Since 9 is not divisible by 11, 68,979 is not divisible by 11.

Learn more about divisibility here:

brainly.com/question/34253396

A bill for dinner at a restaurant is $91.42.Lucy wants to leave a 15% tip. Which is a
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Answers

Answer:

Step-by-step explanation:

I DONT WANT HOW TO DO IT JUST THE ANSWER

Answers

56 trust me homie yuh

Answer:

87.5

Edited: Yea should be 56, misread it LOL.

Appoligise to that silly mistake

Step-by-step explanation:

You go to school in a college town. You know that there are 2000 students enrolled in the school, but you don’t know the population of the town (without students). You walk up and down the main streets of the town, stop people, and ask them if they are students or not. You ask 100 people, and 60 of them say they are students. Estimate the nonstudent population of the town.

Answers

2,000/100=20
40*6=240
I hope got it correct
240 non students
:)

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