1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
balandron [24]
1 year ago
8

The following table presents the time taken to review articles that were submitted for publication to a particular journal durin

g a recent year. A few articles took longer than 6 months to review; these are omitted from the table. Consider the data to be a population.

Mathematics
1 answer:
belka [17]1 year ago
7 0

A) Variance = 10.24

B) Standard Deviation = 3.2

One of the measurements of dispersion is the standard deviation, which is exclusively used for quantitative data. It aids in determining if the data's mean is a suitable measurement to reflect the core value.

TIME         FREQUENCY(f)  MIDPOINT(x)    d    d²     fd              fd²

0 - 0.9         43                          0.45             -3     9     -129            387

1.0 - 1.9         17                           1.45              -2    4     -34                68

2.0 - 2.9       19                            2.45             -1     1       -19               19

3.0 - 3.9        18                            3.45             0     0       0                  0

4.0 - 4.9        14                            4.45              1      1        14               14

5.0 -5.9         16                            5.45              2     4        32             64                            

∑f = 127                                                              

∑fd = -136  

∑fd² = 552

d = \frac{x - 3.45}{1}

Standard Deviation = \sqrt \frac{fd^{2} }{N} - \sqrt \frac{(fd)^{2} }{N} * i

\sqrt \frac{552}{127} -\sqrt (\frac{-136}{127})^{2}   * 1

√4.35 - √1.15

Standard Deviation = 3.2

(SD)² = (3.2)² = 10.24

Variance = 10.24

To know more about standard deviation, refer to this link :

brainly.com/question/12402189

#SPJ1

You might be interested in
ANSWER ASAP PLSSS
Andrei [34K]

vbbbbbbbbbbbbbbbbbdnnnnnAnswer:

Step-by-step explanation:

8 0
3 years ago
Solve for X x+27 = -12 pls hurry pleaseeeee
Yuliya22 [10]

Answer:

x + 27 = - 12

x = - 39

Step-by-step explanation:

4 0
2 years ago
Solve the quadratic equation.<br> (x + 1)2 = 16<br> x = 3 or-5<br> x= -3 or 5<br> X = 35
Damm [24]

Answer:

X=7

(x - 3 )(x +5)

(x+3) (x-5)

X - 35

Step-by-step explanation:

(x + 1)2 = 16

Expanding , we have

2x + 2 = 16

2x = 16 - 2

2x = 14

X= 7.

4 0
3 years ago
28/36 reduced fraction
ratelena [41]
28/4 = 7,
36/4 = 9,
Place the 7 over the 9 and you get 7/9!
6 0
3 years ago
Read 2 more answers
Which fraction is less than 3/4? 7/8 7/12 15/16 17/20
Alika [10]
7/12  is less than 3/4.

Check:    3/4 is same as 9/12.  Clearly see that 7/12 is less than 9/12
4 0
3 years ago
Read 2 more answers
Other questions:
  • Solve 6 and 7 please?
    7·1 answer
  • Can someone help me I’m being timed and this needs to be done quick
    5·1 answer
  • Three cells with generation times of 60 minutes are inoculated into a culture medium. how many cells are there after 5 hours?
    9·2 answers
  • One number is six greater than another. If the sum of the two numbers is 44.​
    5·1 answer
  • Help :) <br> g(r)=−1−7r<br> g(6)
    10·2 answers
  • Simplify 5 1/3•5 2/3
    5·2 answers
  • What is a bar diagram​
    8·1 answer
  • Evaluate the expression.<br><br> I -3 I
    11·2 answers
  • ATCs are required to undergo periodic random drug testing.
    5·1 answer
  • mrs jones gave 1/5 of a cake to her neighbour. she then sliced the remainder into 3 pieces for her 3 children, ken, ron and davi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!