Test For Data Handling

10, 8, 12, 17, 19, 17, 41, 40, 12, 46, 37, 17, 1, 9, 21, 13, 48, 12, 21, 19, 33, 5, 38, 39, 19, 23, 2, 6, 30, 27.

Using tally marks prepare a frequency table such that 20�30 is a class interval.

(i) What is the class interval?

(ii) Which class has the lowest frequency?

(iii) Which class has the highest frequency?

(iv) Which two classes have the same frequency?

(v) What is the lower limit of the class-interval 300�325?

(vi)What is the upper limit of the class interval 275�300?

(i) What information is being given by the histogram?

(ii) Which group contains the maximum students?

(iii) How many students have a height of 160 cm and more?

(iv) What is the ratio of the number students in 130�140 cm group and the number of students in 160�170 cm groups?

(i) What is the central angle corresponding to the activities “school and home work”?

(ii) Find the fraction of the circle representing each of these given information.

Display the data by a pie chart.

These are mixed well and one slip is chosen from the box without looking into it. What is the probability of:

(i) getting a card on which 7 is written?

(ii) getting a card having two-digit number on it?

(iii) getting a number less than 5?

(iv) getting a number more than 5?

(i) A number less than 5.

(ii) A composite number.

(iii) A prime number.

(iv) A number more than 3.