Question 1: Complete the following crossword puzzle using the given directions for ACROSS [from left to right] and DOWN [from top to bottom].
Accross: (1) __________ is the measure of the chance of the happening of an event.
(2) is the number of times a particular entry occurs. __________.
(3) __________ is a special type of bargraph in which the rectangles are having no gap between them.
(4) The numerical information is called __________.
(5) The probability of a sure __________ is 1.
Question 2: Match the following:
(a) Probability of a sure event
(b) Probability of an impossible event.
(c) In a histogram there is ______ gap between the bars.
(d) In a bar graph there is _________ gap between the bars.
Question 3: Choose the appropriate answer:
(i) A coin tossed once; what is the probability of getting a head?
(ii) In the interval (0–10), 10 is called the
(a) Lower limit
(b) upper limit
(iii) Tally marks are used to represent:
(a) Lower limits
(b) upper limits
(iv) The mid-value of the class interval is called class mark and it is equal to:
Question 4: Answer the following questions:
(i) A die has six faces having dots, 1, 2, 3, 4, 5 and 6 respectively.
What is the sum of dots on two faces of a die ?
(ii) A die is thrown once. What is the probability of getting a prime-number?
(iii) What is the class size in the adjoining histogram?
(iv) What do we call a circle-graph?
1. (1) → PROBABILITY
(2) → FREQUENCY
(3) → HISTOGRAM
(4) → DATA
(5) → EVENT
2. (a) → (iii)
(b) → (i)
(c) → (ii)
(d) → (iv)
3. (i) (c)
4. (i) 7
(iv) → piechart