find mean of sleeping hours during one week and also find mode and median of the same data 

rn

 

where is GK 
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1m= 1000mm
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Sunday=5 hrs
Monday=8hrs
Tuesday=7hrs
Wednesday=6hrs
Thursday=4hrs
Friday=7hrs
Saturday=8hrs

Mean=Sum of observation/No.of
observation
=9+8+7+6+4+7+8/7
=49/7
=7
Mode= 7 and 8 occurs most (2times)
So, mode =7 and 8
Median= Arrange in ascending order
=4,5,6,7,7,8,8
Here no.of observation=7(odd
no.)
=(n+1/2)th term
=(7+1/2)th term
=8/2th term
=4th term
=7
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9 into 7 =63
 
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why are you blabbering
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i cant understand your question. write it properly. no meaning
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CLEAR YOUR QUESTION.
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h aha
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please give the data also
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1+2+3+4+5+6+7?7=28?7=4 so, the mean is 4 and mode is 7 median is 4
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Sunday=5 hrs 
Monday=8hrs 
Tuesday=7hrs 
Wednesday=6hrs 
Thursday=4hrs 
Friday=7hrs 
Saturday=8hrs 

Mean=Sum of observation/No.of 
observation 
=9+8+7+6+4+7+8/7 
=49/7 
=7 
Mode= 7 and 8 occurs most (2times) 
So, mode =7 and 8 
Median= Arrange in ascending order 
=4,5,6,7,7,8,8 
Here no.of observation=7(odd 
no.) 
=(n+1/2)th term 
=(7+1/2)th term 
=8/2th term 
=4th term 
=7
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0775
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What?
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Sodium carbonate (Na2CO3): It is commercially available as washing soda and is used for washing purposes. It is also used in the preparation of glass and soap.

Sodium hydrogen carbonate or sodium bicarbonate (NaHCO3): It is commercially available as baking powder and is used in the baking food item like bread and bun. It is also used as an antacid which neutralizes the excessive acid in the stomach along with magnesium and aluminium hydroxide.

Sodium chloride (NaCl): It is the common salt and it is the main ingredient of food. Common salt is used in the preservation of food like to pack fish and meat during storage.

Ammonium chloride (NH4Cl): It is used in dry cell as an electrolyte.

Potassium nitrate (KNO3): It is used in the manufacture of glass and fertilizers. It is also the main constituent of gun powder.

Calcium carbonate (CaCO3): It is largely present in marbles. It is used in the preparation of glass and cement and also used in the extraction of iron from its ore in the form of slag (calcium silicate).

Copper sulphate (CuSO4): It is also known as "blue vitriol" and "blue stone". It is used in the copper voltmeter and in electroplating. It is used in the manufacture of insecticides and in calico printing.

Potash alum [K2SO4.Al2(SO4)3.24 H2O]: It is a double salt and is known as potassium aluminium sulphate. It is commonly used in the purification of water and in various industries like paper industry, dying industry, leather industry etc. It stops bleeding when applied on wound.

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