Question

The average of 19 observation is54.If the average of first 10 observation is56and that of last 10 observation is53.find the tenth observation​

Answer 1

Answer:

64

Step-by-step explanation:

19×54= 1026

53×10=530

56×10=560

530+560=1090

1090-1026= 64

therefore the 10th observation is 64

please make my answer the brainliest

Answer 2

Given : The average of 19 observation is 54

the average of first 10 observation is 56

and that of last 10 observation is 53.

To find :  the tenth observation​

Solution:

The average of 19 observation is 54

Sum of 19 observations = 19 * 54 =   1026

the average of first 10 observation is 56

Sum of first 10 observation = 10 * 56 = 560

the average of last 10 observation is 53

Sum of last  10 observation  = 10 * 53 = 530

Sum of all observation + 10th observation = 560 + 530

= 1090

 1026 + 10th observation = 1090

=> 10th observation = 1090 - 1026

=> 10th observation = 64

tenth observation​ is 64

Learn More:

For a particular frequency distribution table, the class size is 25 and ...

brainly.in/question/23030866

For a particular frequency distribution table, the class size is 25 and ...

brainly.in/question/23033834