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
satela [25.4K]
3 years ago
5

What is the approximate value for the modal daily sales?

Mathematics
1 answer:
Aleksandr [31]3 years ago
5 0

Answer:

Step-by-step explanation:

Hello!

<em>The table shows the daily sales (in $1000) of shopping mall for some randomly selected  days </em>

<em>Sales 1.1-1.5 1.6-2.0 2.1-2.5 2.6-3.0 3.1-3.5 3.6-4.0 4.1-4.5 </em>

<em>Days 18 27 31 40 56 55 23 </em>

<em>Use it to answer questions 13 and 14. </em>

<em>13. What is the approximate value for the modal daily sales? </em>

To determine the Mode of a data set arranged in a frequency table you have to identify the modal interval first, this is, the class interval in which the Mode is included. Remember, the Mode is the value with most observed frequency, so logically, the modal interval will be the one that has more absolute frequency. (in this example it will be the sales values that were observed for most days)

The modal interval is [3.1-3.5]

Now using the following formula you can calculate the Mode:

Md= Li + c[\frac{(f_{max}-f_{prev})}{(f_{max}-f_{prev})(f_{max}-f_{post})} ]

Li= Lower limit of the modal interval.

c= amplitude of modal interval.

fmax: absolute frequency of modal interval.

fprev: absolute frequency of the previous interval to the modal interval.

fpost: absolute frequency of the posterior interval to the modal interval.

Md= 3,100 + 400[\frac{(56-40)}{(56-40)+(56-55)} ]= 3,476.47

<em>A. $3,129.41 B. $2,629.41 C. $3,079.41 D. $3,123.53 </em>

Of all options the closest one to the estimated mode is A.

<em>14. The approximate median daily sales is … </em>

To calculate the median you have to identify its position first:

For even samples: PosMe= n/2= 250/2= 125

Now, by looking at the cumulative absolute frequencies of the intervals you identify which one contains the observation 125.

F(1)= 18

F(2)= 18+27= 45

F(3)= 45 + 31= 76

F(4)= 76 + 40= 116

F(5)= 116 + 56= 172 ⇒ The 125th observation is in the fifth interval [3.1-3.5]

Me= Li + c[\frac{PosMe-F_{i-1}}{f_i} ]

Li: Lower limit of the median interval.

c: Amplitude of the interval

PosMe: position of the median

F(i-1)= accumulated absolute frequency until the previous interval

fi= simple absolute frequency of the median interval.

Me= 3,100+400[\frac{125-116}{56} ]= 3164.29

<em>A. $3,130.36 B. $2,680.36 C. $3,180.36 D. $2,664</em>

Of all options the closest one to the estimated mode is C.

You might be interested in
14% of the number is 63 <br> Find the number
Lady_Fox [76]

Answer:

450

Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
Does anyone know how to change their username for Brainly????? If so HELP!!!!!!!!!! Will give 20 points to anyone I really don't
Len [333]

Answer:

no I don't is it not in the user settings?

8 0
2 years ago
Read 2 more answers
Porky the pig weighs 1,125 lbs. Less than Kobe the Cow. After each gains 50lbs. Kobe the Cow will weigh ten times as much as por
Papessa [141]

Answer:

Step-by-step explanation:

Let x represent the initial weight of Porky the pig.

Porky the pig weighs 1,125 lbs less than Kobe the Cow. This means that the initial weight of Kobe the cow is

x + 1125

After each gains 50lbs. Kobe the Cow will weigh ten times as much as porky the pig. This means that

(x + 1125) + 50 = 10(x + 50)

x + 1125 + 50 = 10x + 500

10x - x = 1125 + 50 - 500

9x = 675

x = 675/9

x = 75

Porky's current weight is

75 + 50 = 125 lbs

Kobe's current weight is

(75 + 1125) + 50

= 1250 lbs

4 0
2 years ago
Q1) If Q is directly proportional to P and Q = 28 when P = 4, (i) express Q in terms of P, (ii) find the value of Q when P = 5,
marysya [2.9K]

Answer:

Q1)i) Q= 7p

ii) Q= 35

iii) P= 6

Q2)x= 3

Q3) B=4

5 0
3 years ago
Which expression is equivalent to the given expression?
Tatiana [17]

Answer:

The answer is 4a-12

Step-by-step explanation:

Hope this helped :>

3 0
2 years ago
Read 2 more answers
Other questions:
  • Find the volume of the parallelepiped (box) determined by uv and w
    7·1 answer
  • Help plz. I hope you can tell with the picture says because I’m looking at it right now and I definitely can.
    5·1 answer
  • Divide 1 1/5 ÷ 2/3 plz awser in a mixed number and in simplest form.
    12·1 answer
  • A=lw+wh+lh, solve for w
    13·2 answers
  • I need help please will mark the brainliest
    8·1 answer
  • 1. Two students conducted similar experiments. The results of their experiments are
    5·1 answer
  • Please help me out with this asap.​
    14·1 answer
  • What is the area of the polygon given below?
    14·2 answers
  • Does the graph represent an linear or nonlinear function
    10·2 answers
  •  helloo , i need help with this problem it says write this number (797,000,000,000+ 619,000,000+132)in standard form, please h
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!