There are 25 girls in a class. The average height of the girls is 130 cm. Write true or false in
the space provided.
Statement
1)If there is a girl of height 132 CM in the class, there must be a girl of height 128 CM.
2)The majority of the girls must have height 130 CM.
3)If you rank all of the girls from the shortest to the tallest, then the middle one must have a height equal to 130 cm.
4)Half of the girls in the class must be below 130 CM, and half of the girls must be above 130 CM.
Answers
All Statement are FALSE for 25 girls in a class. The average height of the girls is 130 cm
Step-by-step explanation:
1)If there is a girl of height 132 CM in the class, there must be a girl of height 128 CM => This is FALSE
If two grils are of 129 cm & all other of 130 cm with 132 cm girl then also average will be 130 cm
2)The majority of the girls must have height 130 CM. - FALSE
this is Defined by Mode but 130 cm is average not mode
3)If you rank all of the girls from the shortest to the tallest, then the middle one must have a height equal to 130 cm. FALSE
=> This is Defined by Median but 130 ia average not Median
4)Half of the girls in the class must be below 130 CM, and half of the girls must be above 130 CM. FALSE
This is only possible when 130 cm is median and only one girl is with 130 cm height
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