Subject Experts Solutions for Chapter: Data Handling, Exercise 1: Question Bank

Following is the dual bar graph on the no. of cars of 2 different colours sold by a company in the first 9 months of a year.

During which month the difference of sales of both colours minimum?

Following is the dual bar graph on the no. of cars of $2$ different colours sold by a company in the first $9$ months of a year. 

During which month the sale of the $2$ colours was equal?

Following are the marks of $20$ students in a science practical test: $4,$ $6,$ $7,$ $5,$ $3,$ $5,$ $4,$ $5,$ $2,$ $6,$ $2,$ $5,$ $1,$ $9,$ $6,$ $5,$ $8,$ $4,$ $6,$ $7$.

Based on this data, find the highest observation.

Following are the marks of $20$ students in a science practical test: $4,$ $6,$ $7,$ $5,$ $3,$ $5,$ $4,$ $5,$ $2,$ $6,$ $2,$ $5,$ $1,$ $9,$ $6,$ $5,$ $8,$ $4,$ $6,$ $7$. Based on this data answer the following question:
The lowest observation $=$ ?

Following are the marks of $20$ students in a science practical test:

$4,$ $6,$ $7,$ $5,$ $3,$ $5,$ $4,$ $5,$ $2,$ $6,$ $2,$ $5,$ $1,$ $9,$ $6,$ $5,$ $8,$ $4,$ $6,$ $7$.

Based on this data find the range.

Following are the marks of $20$ students in a science practical test. Find the median.

$4,$ $6,$ $7,$ $5,$ $3,$ $5,$ $4,$ $5,$ $2,$ $6,$ $2,$ $5,$ $1,$ $9,$ $6,$ $5,$ $8,$ $4,$ $6,$ $7$

Following are the marks of $20$ students in a science practical test: $4,$ $6,$ $7,$ $5,$ $3,$ $5,$ $4,$ $5,$ $2,$ $6,$ $2,$ $5,$ $1,$ $9,$ $6,$ $5,$ $8,$ $4,$ $6,$ $7$. Find the mode of the data.

Following are the marks of $20$ students in a science practical test: $4,$ $6,$ $7,$ $5,$ $3,$ $5,$ $4,$ $5,$ $2,$ $6,$ $2,$ $5,$ $1,$ $9,$ $6,$ $5,$ $8,$ $4,$ $6,$ $7$. Find the mean of the given data.