The following table shows the number of police calls that were made last year in each of the cities in Hogdon County.
City Clarksville Bremington Shells Gristle Thornbury
Number of police calls 244244244 353353353 235235235 311311311 \large??question mark
If the mean of the data set is 273273273 calls, find the number of police calls in Thornbury.
Answers
x = -100747777778
Step-by-step explanation:
Given data is
Clarksville 244244244
Bremington 353353353
Shells 235235235
Gristle 311311311
Thornbury x
We know from the formula of mean
mean = sum / number of entries
273273273 = (244244244 + 353353353 + 235235235 + 311311311 + x)/5
273273273 * 5 = 11441144143 + x
x = -100747777778
Since, the answer can not be negative, there is something wrong with the data but the procedure will be same
Given : number of police calls that were made last year in each of the cities in Hogdon County. mean of the data set is 273
To find : the number of police calls in Thornbury
Solution :
City Number of police calls
Clarksville 244
Bremington 353
Shells 235
Gristle 311
Thornbury n
Total 1143 + n
Number of cities = 5
Total police calls = 1143 + n
Mean = 273
Mean = Total Calls / number of cities
=> 273 = (1143 + n)/5
=> 1365 = 1143 + n
=> n = 222
222 police calls in Thornbury.
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