Question

the heights of 10 girls were measured in cm and the results are as follows :
135,150,139, 128,151 ,132 ,146, 149, 143, 141.
1)what is the height of the tallest girl? 2)what is the height of the shortest girl? 3)what is the range of the data ?
4)what is the mean height of the girl ?5)how many girls have Heights more than mean height ?
answer for the question

Answer 1

Hey there!!

The data arranged in ascending order

= 128 , 132 , 135 , 139 , 141 , 143 , 146 , 149 , 150 , 151

( i ) Height of the tallest girl = 151 cm

( ii ) Height of the shortest girl = 128 cm

( iii ) range = highest - smallest ( 151 - 128 ) = 23 cm

( iv ) Mean = sum of all observations / total number of observations

= 1414 / 10

= 141.4 cm

( v ) How many girls are there with height higher than mean = 5

_________________

Answer 2

1. The hight of tallest girl is 151.

2. The height of the shortest girl is 128.

3. Range =max.value -min.value
151-128=23
Range =23

4. Mean =sum of observation/no. of observation
138+150+139+128+151+132+146+149+143+141/10 =141.7
mean =141.7

5. 5 girls are have heights more than the mean.

Hope this helps U........