1. Calculate skewness and its coefficient from the following data: (Use Pearson's Formula).
10
11
12
13
14
15
16
Wages (Rs.) :
No. of workers :
4
7
9
15
8
5
2
Answers
Answer:
Read the case study based questions carefully and answer any four out of the following:
As we know reading is a good habit and library give equal opportunity to all people by making
books available to all. Reading books in a library has some cost, the same way Library ABC has
some policies of taking and reading books that is a fixed charge for the first three days and an
additional charge for each day thereafter.
Following the same rules two students paid the library the following amount:
Shristi paid 27 for a book kept for seven days. While Bubbly paid 21 for the book kept for
five days.
i. According to the given condition, if fix charge for the reading book is ₹ x and the additional
charge for each day be ₹ y. then the linear equation is,
a. x + 4y = 27; x+ 2y = 21
b. x + 2y = 27; x + 4y = 21
c. 4x + y = 27; 2x + y = 21
d. 2x + y = 27; 4x + y = 21
ii. Graphically, the above pair of equations represents two lines which are
a. Intersecting at exactly one point
b. Intersecting at two points
c. Coincident
d. Parallel
iii. The value of fixed charge i.e.x and additional charge i.e y is:
a. x = 3,Y = 15
b. x = 15 ,Y = 3
c. x = 6, Y = 12
d. x = 12, Y = 6
Step-by-step explanation:
Read the case study based questions carefully and answer any four out of the following:
As we know reading is a good habit and library give equal opportunity to all people by making
books available to all. Reading books in a library has some cost, the same way Library ABC has
some policies of taking and reading books that is a fixed charge for the first three days and an
additional charge for each day thereafter.
Following the same rules two students paid the library the following amount:
Shristi paid 27 for a book kept for seven days. While Bubbly paid 21 for the book kept for
five days.
i. According to the given condition, if fix charge for the reading book is ₹ x and the additional
charge for each day be ₹ y. then the linear equation is,
a. x + 4y = 27; x+ 2y = 21
b. x + 2y = 27; x + 4y = 21
c. 4x + y = 27; 2x + y = 21
d. 2x + y = 27; 4x + y = 21
ii. Graphically, the above pair of equations represents two lines which are
a. Intersecting at exactly one point
b. Intersecting at two points
c. Coincident
d. Parallel
iii. The value of fixed charge i.e.x and additional charge i.e y is:
a. x = 3,Y = 15
b. x = 15 ,Y = 3
c. x = 6, Y = 12
d. x = 12, Y = 6Calculate skewness and its coefficient from the following data: (Use Pearson's Formula).
10
11
12
13
14
15
16
Wages (Rs.) :
No. of workers :
4
7
9
15
8
5
2