conduct a survey in your neighbouring houses collect the information that the electricity consumption in a day find the mean median and mode
Answers
Conducted a survey in neighboring houses to collect the information of electricity consumption in a day
Step-by-step explanation:
Survey Done of 50 Families and units consumed daily.
Electricity Number of Mean (mean - 25)/10
Consumed Families CF Class d df
0 - 10 8 8 5 -2 -16
10 - 20 12 20 15 -1 -12
20 - 30 20 40 25 0 0
30 - 40 6 46 35 1 6
40 - 50 4 50 45 2 8
50 -14
Mean = 25 + 10 x(-14)/50
= 25 - 2.8
= 22.2 Units
Median = 20 + 10 * (25 - 20)/20
= 20 + 2.5
= 22.5 units
Mode = 20 + 10 x ( 20 - 12) / (20 - 12 + 20 - 6)
= 20 + 10 * 8/ 22
= 20 + 3.64
= 23.64 units
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Answer:
Mean=23 units, median=20 units & mode=17.5 units.
Step-by-step explanation:
To conduct survey for electricity consumption in a day.
Let survey done is of 40 families and units consumed daily.
Electricity Number of Mean (mean - 20)/10
Consumed Families CF Class d df
0 - 10 8 8 5 -1.5 -12
10 - 20 12 20 15 -0.5 -6
20 - 30 20 40 25 0.5 10
___________________________________________________
40 -8
Mean = 20 + 10 x(-8)/40
= 25 - 2
= 23 Units
Median = 10+10 * (20 -10)/10
= 20 units
Mode = 10+ 10 x ( 10 - 8) / (10 - 8 + 10 - 20)
= 10 + 20/ -8
= 20 -2.5
= 17.5 units
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