An observation occurring seven times in a data is represented as________ using tally marks.

In a bar graph, ________ can be drawn horizontally or vertically.

In a bar graph, bars of ________ width can be drawn horizontally or vertically with ________ spacing between them.

In a pictograph, if a symbol represents 20 flowers in a basket then  stands for ________ flowers.

On the scale of 1 unit length = 10 crore, the bar of length 6 units will represent ________ crore and of ______ units will represent 75crore.