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3 years ago

Find the mean absolute deviation of the data set. {1, 1, 2, 3, 8}

Mathematics

2 answers:

seraphim [82]3 years ago

6 0

Answer:

1.8

Step-by-step explanation:

Median is 2

find the difference from each number to the median.

1,1,2,3,8

Difference: 1,1,0,1,6

add them together

1+1+0+1+6=9

divide by the amount of numbers: 9/5=1.8

Fofino [41]3 years ago

5 0

The mean is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are.
1+1+2+3 +8 = 15
15÷5 = 3

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The following data set represents the salaries of all seven employees at a small start-up company (expressed in thousands of dol

bogdanovich [222]

Answer:

Step-by-step explanation:

If the data set represents the salaries of all seven employees at a small start-up company (expressed in thousands of dollars). 23, 25, 40, 45, 45, 23, 23 in thousands dollars with variance of 99.14, to get the standard deviation, the formula below will be applicable.

Variance = (standard deviation)²

substituting Variance = 99.14 into the equation we wil have;

99.14 = (standard deviation)²

taking the square root of both sides;

√99.14 = √(standard deviation)²

standard deviation = √99.14

standard deviation = 9.96

The standard deviation of the set of datas is 9.96

3 0

3 years ago

Which values for a and b make the statement (a+6) (b-1)=0 true?

alexdok [17]

Answer:

The answers A, B, and C all work for this problem. The answer D is the only one that does not.

Step-by-step explanation:

When looking at two parenthesis being multiplied together and being equal to 0, we know that at least one of the parenthesis must be equal to 0 for it to be true. In A and C, the first parenthesis will be equal to 0 due to a = -6.

(a + 6)

(-6 + 6)

(0)

And in B, we can see that the second parenthesis would be equal to 0 due to b = 1

(b - 1)

(1 - 1)

(0)

Now we can try the D options, but will note that they do not work for either parenthesis.

(a + 6)(b - 1)

(0 + 6)(0 - 1)

(6)(-1)

4 0

3 years ago

PLZ HELP!!! its due tomorrow

3241004551 [841]

Answer:add 3+5+7

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

STATISTICS in a recent year the mean score on the mathematics section of the SAT test was 515 and the standard deviation was 114

vesna_86 [32]

An absolute value inequality to find the range of SAT mathematics test scores within one standard deviation of the mean is; |x – 515| ≤ 114

<h3>How to Write Inequalities?</h3>

A) We are told that;

Mean score = 515

Standard deviation = 114

We are now given that people within one deviation of the mean have SAT math scores that are no more than 114 points higher or 114 points lower than the mean. Thus, the absolute value inequality is;

|x – 515| ≤ 114

B) The range of scores to within ±2 standard deviations of the mean is;

Range = 515 ± 2(114)

Range = 287 to 743

Read more about Inequalities at; brainly.com/question/25275758

#SPJ1

3 0

2 years ago

When an opinion poll selects cell phone numbers at random to dial, the cell phone exchange is first selected and then random dig

Aliun [14]

Answer:

c. 8.25

Step-by-step explanation:

The given scenario corresponds to binomial experiment because

1. There are two possible outcomes i.e. each number can be working or not working.

2. On each dialing the probability of getting working cell number is p=0.55.

3. Cell phone numbers are randomly dialed so these are independent.

4. A pollster dialed 15 cell numbers i.e. n=15.

The mean number of calls that reach a working cell number can be calculated by computing mean of binomial distribution using the given information.

Mean of binomial distribution=E(x)=np

The mean number of calls that reach a working cell number=15*0.55=8.25

Thus, the mean number of calls that reach a working cell number=8.25

3 0

3 years ago