it means rare
Dense Index: An index record appears for every search key value in file. This record contains search key value and a pointer to the actual record. Sparse Index: Index records are created only for some of the records. To locate a record, we find the index record with the largest search key value less than or equal to the search key value we are looking for. We start at that record pointed to by the index record, and proceed along the pointers in the file (that is, sequentially) until we find the desired record. - - (ref: http://sawaal.ibibo.com/computers-and-technology/difference-between-sparce-index-dence-index-773764.html)
Mean is the average.
I didn't mean what I said. What does antidisestablishmentarianism mean? My sister is mean. I don't like being mean. The mean of a set of values is the average. The mean temperature is much lower in the valley in spring.
The population mean is the mean value of the entire population. Contrast this with sample mean, which is the mean value of a sample of the population.
If repeated samples are taken from a population, then they will not have the same mean each time. The mean itself will have some distribution. This will have the same mean as the population mean and the standard deviation of this statistic is the standard deviation of the mean.
Sparse means not occurring much.
it means rare
In geography, sparse refers to an area with low population density or few resources. It can also indicate areas that have limited vegetation or development. A sparse geographic area typically has widely scattered elements such as settlements or vegetation.
i made a sparse contribution for a charity
Sparse was created in 2003.
Sparse grass
Another sparse matrix.
The antonym for sparse is dense.
Sparse grow in plain land
Messy and disordered - items spread in an untidy or irregular way
The comparative form of sparse is sparser
Slim Pickins had sparse facial hair. Some parts of the desert have sparse growth.