Basics of Data Handling

A _____ of information in numbers is called data. (collection/calculation)

The marks of $30$ students in Mathematics (out of $100$ ) are as follows:

$52, 60, 50, 61, 76, 67, 57, 100, 68, 90, 74, 89, 76, 38, 85 ,57, 59, 49, 61 ,55, 45, 57,53, 63, 60,72, 36, 51, 59, 54$

How many students scored $75$ marks or more?

The marks of $30$ students in Mathematics (out of $100$ ) are as follows:

$52,60,50,61,76,67,57,100,68,90,74,89,76,38,85,57,59,49,61,55,45,57,53,63,60,72,36,51,59,54$

The following data shows the different colours of umbrella preferred by a group of people.

What is the total number of people in the group?

Ganesh buys vegetables and fruits every day. The following data shows expenditure on the same for a week.

On which day was the expenditure maximum?

The marks of $30$ students in Mathematics (out of $100$ ) are as follows:

$52, 60, 50, 61, 76, 67, 57, 100, 68, 90, 74, 89, 76, 38, 85 ,57, 59, 49, 61 ,55, 45, 57,53, 63, 60,72, 36, 51, 59, 54$

If $40$ is the passing mark, how many students failed?

The marks of $30$ students in Mathematics (out of $100$ ) are as follows:

$52,60,50,61,76,67,57,100,68,90,74,89,76,38,85,57,59,49,61,55,45,57,53,63,60,72,36,51,59,54$

The above data shows the different colours of umbrella preferred by a group of people. Find the colour which is the most common.

Statistics is the subject that deals with the collection, presentation, analysis and interpretation of numerical data.

Each numerical figure in a given data is called as observation.

The data shows the weight (in $\mathrm{kg}$) of $11$ workers in a factory:

$75,$ $63,$ $66,$ $60,$ $60,$ $66,$ $63,$ $66,$ $72,$ $66,$ $75$.

From the above data, what is the highest observation?

Which of the following is a measure of central tendency?

Given below are the seats won by different political parties in the polling outcome of a state assembly election:

Name the political party which won the maximum number of seats. ( $A / B / C / D/ E / F$)

The graph below shows Manu’s weight over a period of 12 months. His doctor advised him to maintain his body weight at around 53 kg to stay healthy.

Which of the following is/are good enough reason(s) to consider that Manu is healthy?

(i) Knowing that his body weight was 53 kg on 4 occasions.

(ii) Knowing that his body weight was 53 kg in the first 2 months.

(iii) Knowing that the average body weight across 12 months is 53.4 kg.

(iv) Knowing that the net deviation of his body weight with respect to 53 kg is close to zero.

The table below shows the temperatures measured at different times of the day at a particular location.

Shiva, Urvi and Rajesh noted down the the temperature of the day, based on the information in the table.

Shiva: 21$ ℃$, as it is the middle value.

Urvi: 22$ ℃$, as it represents more than 25% of the given data.

Rajesh: 21$ ℃$ as it is the average temperature.

Who represented the temperature of the day correctly?

A teacher wants to focus on the most common type of mistake that children commit while solving math problems. The mistakes committed by 1000 students across all grades are available.

Which of the following information helps the teacher the most?