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# Maths as level s1 question URGENT HELP watch

1. For the previous question I got the mean of the weight of 150 babies to be 3.46kg.
During the same period of time, 18 babies were born in the special care baby unit of the hospital. The mean weight of all 168 babies was found to be 3.35 kg.
iv) Calculate an estimate weight of the 18 babies in the special care unit
v) What effect will the addition of the 18 extra data items have on the median and the interquartile range. Explain your answer
3. (Original post by RogerOxon)
I have no idea how to go about them haha
4. (Original post by imaan567)
For the previous question I got the mean of the weight of 150 babies to be 3.46kg.
During the same period of time, 18 babies were born in the special care baby unit of the hospital. The mean weight of all 168 babies was found to be 3.35 kg.
iv) Calculate an estimate weight of the 18 babies in the special care unit
v) What effect will the addition of the 18 extra data items have on the median and the interquartile range. Explain your answer
What is the weight of the initial 150 babies?
What is the weight of the final 168 (150+18) babies?
5. (Original post by RogerOxon)
What is the weight of the initial 150 babies?
What is the weight of the final 168 (150+18) babies?
Ah ok, thankyou I managed to work it out! Still not sure about the second part though...

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