Important Relations between Methods of Finding Mean

Q.

Give the Meaning of controlling

Q. Batsman A gets an average of 64 runs per innings with standard deviation of 18 runs, while batsmen B get an average score of 43 runs with standard devaition of 9 runs in an equal number of innings.discuss the efficiency and consistency of both the batsmen.

Q. There are three methods to find the mean of grouped data, they are the direct method, step deviation method and assumed mean method.

1. True
2. False

Q. There are three methods to find the mean of grouped data, they are the direct method, step deviation method and assumed mean method.

1. True
2. False

Q.

The mean calculated for the raw data will have the exact same value as that of the corresponding grouped data.

1. True

2. False

Q.

Which of these methods gives the highest value of mean?

1. Direct method

2. Assumed mean method

3. Step deviation method

4. They all give the same value

Q.

what do you mean by deviations ?

Q. There are three methods to find the mean of grouped data, they are the direct method, step deviation method and assumed mean method.

1. False
2. True

Q.

if d means deviation , what does it mean by u ?

Q.

Which method of finding the mean would you not use if you have class intervals whose values are big but they are close to each other?

1. Direct method

2. Step deviation method

3. Assumed Mean method

4. Runge-Kutta Method

Q.

The direct method is more accurate than the assumed mean or the step-deviation methods.

1. True

2. False

Q. In the formula, $\overline{x}=\left\{A+\frac{\sum f_i{d}_i}{\sum f_i}\right\}$ for finding the mean of the grouped data, the d_i's are the deviations from A of
(a) lower limits of the classes
(b) upper limits of the classes
(c) midpoints of the classes
(d) none of these

Q. There are three methods to find the mean of grouped data, they are the direct method, step deviation method and assumed mean method.

1. True
2. False

Q.

what is the meaning of d_i in assumed mesn method?

Q.

is assumed mean method and short cut method both the same

Q. There are three methods to find the mean of grouped data, they are the direct method, step deviation method and assumed mean method.

1. True
2. False

Q.

The direct method is more accurate than the assumed mean or the step-deviation methods.

1. True

2. False

Q.

The mean calculated for the raw data will have the exact same value as that of the corresponding grouped data.

1. False

2. True

Q.

Which method of finding the mean would you not use if you have class intervals whose values are big but they are close to each other?

1. Runge-Kutta Method

2. Direct method

3. Step deviation method

4. Assumed Mean method

Q.

Which of these methods gives the highest value of mean?

1. Direct method

2. They all give the same value

3. Assumed mean method

4. Step deviation method