Examlex
In systematic sampling,one of the first k members is selected randomly,and then every kth member after this one is selected.The value k is called the sampling interval and equals the ratio N / n,where N is the population size and n is the desired sample size.
Whole Number Skills
The ability to understand, use, and manipulate whole numbers, encompassing skills such as addition, subtraction, multiplication, and division.
Reversibility
The ability to recognize that objects can change form or condition and return to their original form or condition.
Seriation
The cognitive ability to arrange objects in an order according to size, shape, or any other characteristic, which is a key aspect of logical thinking in children.
Long-Term Memory
The aspect of memory concerned with the storage of information over an extended period, potentially for a lifetime.
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