Question

Dats. .
संदभसिाहित स्पष्टीकरण
कुसुमे साठी या जमातली पाटुन त्याना मनात
D
ड्रती​

Answer 1

Answer:

Let's first arrange the heights in ascending order:

→ 128, 132, 133, 135, 136, 139, 140, 142, 142, 143, 144, 146, 148, 149, 150, 151, 156

Coming to the first question:

i) Height of the tallest girl:

According to the ascending order, 156 cm is the greatest value.

Hence the height of the tallest girl is 156 cm.

ii) Height of the shortest girl:

According to the ascending order, 128 cm is the least value.

Hence the height of the shortest girl is 128 cm.

iii) How many girls have a height greater than 140 cm or more ?

→ These are the heights which are greater than or equal to 140 cm.

140, 142, 142, 143, 144, 146, 148, 149, 150, 151, 156

Hence 11 girls have a height greater than or equal to 140 cm.

iv) Mean height of the given data is calculated as:

\boxed{Mean = \dfrac{\text{Sum of all heights}}{\text{Total number of girls}}}

Mean=

Total number of girls

Sum of all heights

Sum of all heights is equal to 2,414 cm. Total number of girls, according to the question is 17.

Hence the mean height of the given data is:

\implies \bf{ Mean = \dfrac{2414}{17}} = \bf{\boxed{142\:\:cm}}⟹Mean=

17

2414

=

142cm