the average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2 . three scores extracted from the test are 148,102,152. What is the average of the extracted scores that are extreme values.
Answers
Answer:
Step-by-step explanation:
Hello!
The variable of interest is
X: mark obtained in an aptitude test by a candidate.
This variable has a mean μ= 128.5 and standard deviation σ= 8.2
You have the data of three scores extracted from the pool of aptitude tests taken.
148, 102, 152
The average is calculated as X[bar]= Σx/n= (148+102+152)/3= 134
An outlier is an observation that is significantly distant from the rest of the data set. They usually represent experimental errors (such as a measurement) or atypical observations. Some statistical measurements, such as the sample mean, are severely affected by this type of values and their presence tends to cause misleading results on a statistical analysis.
Using the mean and the standard deviation, an outlier is any value that is three standard deviations away from the mean: μ±3σ
Using the population values you can calculate the limits that classify an observed value as outlier:
μ±3σ
128.5±3*8.2
(103.9; 153.1)
This means that any value below 103.9 and above 153.1 can be considered an outlier.
For this example, there is only one outlier, that this the extracted score 102
I hope this helps!
Related Questions
El producto de un número y 56
Which relationship matches the graph A- {(2,5), (3,3),(1,0),(2,1),(8,8)}B - {(2,5),(3,3),(0,1),(2,1),(8,8)}C- {(5,2),(3,3),(0,1),(2,1),(8,8)}D - {(5,2),(3,3),(1,0),(2,1),(8,8)}
I need help solving this equatioion. (2xy)(3y)
I need some help real quick
Answers
Answers:
Option 1)
6a + 8s = 102
14a + 4s = 150
each adult ticket costs 9 dollars
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Explanation:
6 adult tickets and 8 student tickets bring in $102, so that means 6a+8s = 102
14 adult tickets and 4 students tickets bring in $150, so 14a+4s = 150
The system of equations is
If we multiply both sides of the second equation by -2, we get this updated system
Add the equations straight down
6a+(-28a) = -22a
8s+(-8s) = 0s = 0 ... the 's' terms go away
102+(-300) = -198
So we end up with the equation -22a = -198 and that solves to a = 9 after dividing both sides by -22.
Each adult ticket costs $9
If you want the value of s, then
6a+8s = 102
6(9)+8s = 102
54 + 8s = 102
8s = 102-54
8s = 48
s = 48/8
s = 6
Meaning each student ticket costs $6
Or you could use the other equation
14a+4s = 150
14(9)+4s = 150
126+4s = 150
4s = 150-126
4s = 24
s = 24/4
s = 6
We get the same value of s
Answers
Answer:
9:04
Step-by-step explanation:
21 - 17 = 4
it's using subtraction
Answer:
9:04
Step-by-step explanation:
9:21 - 17 minutes = 9:04
Answers
Answer:
You would use > and <, if the first number is greater than the other, you would use >, and vice versa. For the others, you would write the numbers in the order stated, for example, 0, 5, and -7 would be written as -7, 0, 5, -7 being the smallest number, and 5 being the biggest number. Hope this helps.
Answer:
1: <
2: >
3: <
4: <
5: >
6: >
7: _-7_0_5_
8: _-10_3_10_
10: _-1/2_-8_0_1/2
There are the answers, the only one im not sure about is 10
Answers
Answer:
5 x 9 is 45
Step-by-step explanation:
just is loll
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Answers
The value of y is 225 when x is 50 from the given graph.
What is Coordinate System?
Arrangement of reference lines or curves used to identify the location of points in space is called as Coordinate system.
We need to find the value of y when x is fifty.
In the given graph we have to draw a perpendicular line at x =50.
Now we have to check the point where the perpendicular line touches the graph curve.
Take the corresponding value of y.
When x is 50 the value of y is nearly to 225.
Hence, the value of y is 225 when x is 50.
To learn more on Coordinate system click:
#SPJ2
Answer:
About 225
Proofs in the picture
Matching
Full disclosure
Cost
Answers
Answer:
Matching
Step-by-step explanation:
Sally's Hair Salon purchases hair dye and records the dye and records the dye as an asset. Now as they are used they are expensed. This is an example of "Matching".
The concept of Matching is based on the Principal of accrual accounting that direct that the companies should report the revenues and expenses in the period in which they are earned.
Answer:
Timeliness
Step-by-step explanation:
This case describes an example of timeliness. Timeliness refers to a practice of accountants by which they record relevant information in the moment in which this information is needed. In this case, the accountant that is taking care of the expenses of Sally's Hair Salon is acting in a timely manner because he is recording the expenses as soon as possible. This will allow the business to make financial decisions that are better informed.