a 1 in x systematic random sample is obtained by randomly selecting one of the first "x" units in the sampling frame and then selecting every subsequent xth unit Its generally used in a continuous process. First observation is chosen randomly and then other observations are picked by adding some constant "c" to the successive observations. c = N/n where N = size of population and n = size of sample It's important to check that the data is not having a periodic property. (Foe eg. If sales are analysed and x is taken as 7, then sample will include the sales on the same day of every week)
Neha goes to a bookstore with a certain amount of money. She can buy 60 notebooks or 20 novels with the money she has. However, she saves 15% of the amo...
A businessman's earning increase by 25%in one year but decreases by 4%in the next. Going by this pattern, after 5 years, his total earnings would be Rs....
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Monthly income of P is Rs.14000 and his monthly savings is Rs.8500. If his monthly income is decreased by 30% and monthly expenditure is decreased by 25...
There are 100 students in a particular class. 60% students play cricket, 25 % play football and 15% play both the games. What is the number of students ...
Suyash have total amount of Rs.2800 out of which, he spent 25% on food, 30% of the rest on travelling. Out of remaining amount he spends Rs.800 on misce...
From the salary of a software engineer, if 15% is used as house rent, 25% of the remaining is spent on household items, 25% of the remaining as income t...
A spent 30% and 22% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 20% and 40% to his mother and brother, respec...
