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
Paha777 [63]
1 year ago
14

I need to send photos.

Mathematics
1 answer:
frez [133]1 year ago
6 0

SOLUTION:

Step 1:

From the given question, and comparing the scores in classes A and B

Step 2:

Question one, to know the class which had the better overall result on the exam;

(I) The scores in class A ranges from 65 to 100, while that of class B ranges from 60 to 90. This explains that class A had better results.

(ii) The median of the scores in class A is 85, while the median of the scores in class B is 75, this is another piece of supporting evidence that class A had better results.

Step 3:

Question two, to know the class which had greater variability in the results;

For a better understanding of this question, I need to explain the concept of variability in statistics.

Variability in statistics refers to the difference being exhibited by data points within a data set, as related to each other or as related to the mean. This can be expressed through the range, variance or standard deviation of a data set.

Step 4:

So we need to find the range of scores in each of the two classes and then compare, the class with the greater range has the greater variability.

The Range is the difference between the lowest and highest score (H - L), where H is the highest score and L is the lowest score.

Step 5:

Applying the formula for range stated in step 4;

For Class A; H = 100 and L = 65

For Class B; H = 90 and L = 60

The range for class A; H - L = 100 - 65 = 35

The range for class B; H - L = 90 - 60 = 30

By comparing the range of class A and that of B, it is clear that Class A had a greater range (variability)

CONCLUSION:

Class A had better overall results in the exam and greater variability in the results.

You might be interested in
Help please<br><br> 2 (2b + 8)<br><br> b = 2
Bess [88]

Answer:

24

Step-by-step explanation:

2(2x2+8)

2(4+8)

2(12)

24

7 0
3 years ago
Suppose the population of a town is 567 in 2001. The population decreases at a rate of 1.5% every year. What will be the populat
igomit [66]

for the formula is

 Y = starting population x (1-rate of change)^number of years

2010-2001 = 9

Y= 567 x (1-0.015)^9 = 494.89, round up to 495 people

7 0
3 years ago
Read 2 more answers
Two families go to a shake shack. The Johnsons order four fires and six cheeseburgers for $52. The Liauttads order three fries a
stira [4]

4 fries + 6 cheeseburgers = $52

3 fries + 2 cheeseburgers = $24

9 fries + 6 cheeseburgers = $24×3

= $72

$72-$52=$20

5 fries = $20

1 fries = $20÷5

= $4

1 cheeseburger = [$24 - (3×$4)]÷2

= $6

7 0
2 years ago
Write down the multiples of each number vertically and horizontally
Rashid [163]

Answer:

1

6

4

10

14

18

8

16

12

4

6

8

10

12

14

16

18

26

Step-by-step explanation:

8 0
3 years ago
Mrs. Barlow's math class took a test yesterday. Out of 70 students, 70% of them passed. How many of Mrs. Barlow's students passe
postnew [5]
The answer is A . 49
5 0
3 years ago
Other questions:
  • Need help on this one
    15·1 answer
  • Please answer ASAP
    15·2 answers
  • Which is another way of correctly expressing<br> (x - 3)(x - 3)?
    11·2 answers
  • Audrey, an astronomer is searching for extra-solar planets using the technique of relativistic lensing. Though there are believe
    5·1 answer
  • Given f(x) = √(x-3) , what is the positive value of f(12)?
    12·1 answer
  • Answer asap<br> honest and simplest form
    11·1 answer
  • Which graph represents the inequality y≥1−3x?
    5·1 answer
  • Write the recursive formula of 13, 9, 5...
    10·1 answer
  • Find the Missing angle <br>​
    10·2 answers
  • Pls help below, pls help
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!