find mean median and mode of following data
class interval 0-10 10-20 20-30 30-40 40-50 frequency 5,7,8,6,4 I need full explanation pls
Answers
MEAN ;-
☆ To find the mean let us put the data in the table given below,
Mean of the given data is 24.
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MEDIAN ;-
☆ To find the median let us put the data in the table given below,
☆ The cumulative frequency just greater than 15, i.e. 20 and the corresponding class is 20-30.
♨ Thus the median class is 20-30.
I = Lower limit = 20
N = 30 & N/2 = 15
C.F = 12
f = Frequency = 8
h = Class interval = 30 - 20 = 10
Median of the given data is 23.75.
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MODE ;-
I = 20
h = 10
Or
Mode of the given data is 23.32.
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.