Question

Distinguish between u shaped and bell shaped data with suitable illustration

Answer 1

A U shaped distribution is a binomial distribution with frequencies that steadily fall and then steadily rise. There is a higher chance of a measurement being found at the extremes than in the center of the distribution. 
The term bell curve is used to describe the mathematical concept called normal distribution, sometimes referred to as gaussian distribution. The center contains the greatest number of value and therefore would be  the highest pint of the arc of the line.

Answer 2

U-shaped representation of data

It is a bimodal distribution. Its frequencies fall steadily and the rise steadily. Some of its characteristics are:

i. The tails are equal on both sides.

ii. The coefficient of skewness is zero.

iii. Mean is less than the highest mode.

iv. Mean is equal to the median.

v. The difference between the third quartile and the median equals the difference between the first quartile and the median.

Data related to meteorological phenomena and competitive examinations may be represented by a U-shaped curve.

Bell-shaped representation of data

A normal distribution is a bell-shaped frequency distribution curve. Normal distributions are symmetric, asymptotic and unimodal. They have equal mean, median and mode. Most of the data values tend to cluster around the mean. Height and blood pressure follow a normal distribution and are examples of this type of data.