300257
If the mean of n observations is 12 and the sum of the observations is 132, then the value of n is:
1 9
2 10
3 11
4 12
Explanation:
11 Mean of n observations = 12 Sum of observations = 132 \(\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}\) \(\Rightarrow12=\frac{132}{\text{n}}\) \(\Rightarrow\text{n}=\frac{132}{12}=11\) Thus, the value of n is 11 Hence, the correct option is (c).
DATA HANDLING
300258
The mean monthly salary of the 12 employees of a firm is Rs. 1450. If one more person joins the firm who gets Rs. 1645 per month, what will be the mean monthly salary of 13 employees?
1 Rs. 1465
2 Rs. 1954
3 Rs. 2175
4 Rs. 2569
Explanation:
Rs. 1465 Mean salary of 12 employees = Rs. 1450 Sum of salary of 12 employees = 12 × 1450 = Rs. 17400 a new employee joins the firm and he gets, Rs. 1645 hence, new sum of salary = 17400 + 1645 = 19045 new mean \( = \frac{10045}{13} = {1465}\) the new mean salary of all the employees is Rs. 1465
DATA HANDLING
300259
The mean of 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 is:
1 45
2 50
3 55
4 None of these
Explanation:
45 Given data is 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 No. of observations 10 sum of observations is 56 + 15 + 48 + 49 + 52 + 57 + 30 + 51 + 42 + 50 = 450 mean of the data is \(\frac{450}{10} = {45}\)
DATA HANDLING
300260
The average of 5, 0, 6, \(\frac{1}{4} \) and \({\text{ }}{8}\frac{3}{4}\) is:
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DATA HANDLING
300257
If the mean of n observations is 12 and the sum of the observations is 132, then the value of n is:
1 9
2 10
3 11
4 12
Explanation:
11 Mean of n observations = 12 Sum of observations = 132 \(\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}\) \(\Rightarrow12=\frac{132}{\text{n}}\) \(\Rightarrow\text{n}=\frac{132}{12}=11\) Thus, the value of n is 11 Hence, the correct option is (c).
DATA HANDLING
300258
The mean monthly salary of the 12 employees of a firm is Rs. 1450. If one more person joins the firm who gets Rs. 1645 per month, what will be the mean monthly salary of 13 employees?
1 Rs. 1465
2 Rs. 1954
3 Rs. 2175
4 Rs. 2569
Explanation:
Rs. 1465 Mean salary of 12 employees = Rs. 1450 Sum of salary of 12 employees = 12 × 1450 = Rs. 17400 a new employee joins the firm and he gets, Rs. 1645 hence, new sum of salary = 17400 + 1645 = 19045 new mean \( = \frac{10045}{13} = {1465}\) the new mean salary of all the employees is Rs. 1465
DATA HANDLING
300259
The mean of 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 is:
1 45
2 50
3 55
4 None of these
Explanation:
45 Given data is 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 No. of observations 10 sum of observations is 56 + 15 + 48 + 49 + 52 + 57 + 30 + 51 + 42 + 50 = 450 mean of the data is \(\frac{450}{10} = {45}\)
DATA HANDLING
300260
The average of 5, 0, 6, \(\frac{1}{4} \) and \({\text{ }}{8}\frac{3}{4}\) is:
300257
If the mean of n observations is 12 and the sum of the observations is 132, then the value of n is:
1 9
2 10
3 11
4 12
Explanation:
11 Mean of n observations = 12 Sum of observations = 132 \(\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}\) \(\Rightarrow12=\frac{132}{\text{n}}\) \(\Rightarrow\text{n}=\frac{132}{12}=11\) Thus, the value of n is 11 Hence, the correct option is (c).
DATA HANDLING
300258
The mean monthly salary of the 12 employees of a firm is Rs. 1450. If one more person joins the firm who gets Rs. 1645 per month, what will be the mean monthly salary of 13 employees?
1 Rs. 1465
2 Rs. 1954
3 Rs. 2175
4 Rs. 2569
Explanation:
Rs. 1465 Mean salary of 12 employees = Rs. 1450 Sum of salary of 12 employees = 12 × 1450 = Rs. 17400 a new employee joins the firm and he gets, Rs. 1645 hence, new sum of salary = 17400 + 1645 = 19045 new mean \( = \frac{10045}{13} = {1465}\) the new mean salary of all the employees is Rs. 1465
DATA HANDLING
300259
The mean of 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 is:
1 45
2 50
3 55
4 None of these
Explanation:
45 Given data is 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 No. of observations 10 sum of observations is 56 + 15 + 48 + 49 + 52 + 57 + 30 + 51 + 42 + 50 = 450 mean of the data is \(\frac{450}{10} = {45}\)
DATA HANDLING
300260
The average of 5, 0, 6, \(\frac{1}{4} \) and \({\text{ }}{8}\frac{3}{4}\) is:
300257
If the mean of n observations is 12 and the sum of the observations is 132, then the value of n is:
1 9
2 10
3 11
4 12
Explanation:
11 Mean of n observations = 12 Sum of observations = 132 \(\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}\) \(\Rightarrow12=\frac{132}{\text{n}}\) \(\Rightarrow\text{n}=\frac{132}{12}=11\) Thus, the value of n is 11 Hence, the correct option is (c).
DATA HANDLING
300258
The mean monthly salary of the 12 employees of a firm is Rs. 1450. If one more person joins the firm who gets Rs. 1645 per month, what will be the mean monthly salary of 13 employees?
1 Rs. 1465
2 Rs. 1954
3 Rs. 2175
4 Rs. 2569
Explanation:
Rs. 1465 Mean salary of 12 employees = Rs. 1450 Sum of salary of 12 employees = 12 × 1450 = Rs. 17400 a new employee joins the firm and he gets, Rs. 1645 hence, new sum of salary = 17400 + 1645 = 19045 new mean \( = \frac{10045}{13} = {1465}\) the new mean salary of all the employees is Rs. 1465
DATA HANDLING
300259
The mean of 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 is:
1 45
2 50
3 55
4 None of these
Explanation:
45 Given data is 56, 15, 48, 49, 52, 57, 30, 51, 42, 50 No. of observations 10 sum of observations is 56 + 15 + 48 + 49 + 52 + 57 + 30 + 51 + 42 + 50 = 450 mean of the data is \(\frac{450}{10} = {45}\)
DATA HANDLING
300260
The average of 5, 0, 6, \(\frac{1}{4} \) and \({\text{ }}{8}\frac{3}{4}\) is: