Question 1: Complete the following crossword puzzle using the given directions for ACROSS [from left to right] and DOWN [from top to bottom].
Directions:
Accross: (1) __________ is the measure of the chance of the happening of an event.
(2) is the number of times a particular entry occurs. __________.
Down:
(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:
Column A | Column B |
(a) Probability of a sure event | (i) 0 |
(b) Probability of an impossible event. | (ii) no |
(c) In a histogram there is ______ gap between the bars. | (iii) 1 |
(d) In a bar graph there is _________ gap between the bars. | (iv) equal |
Question 3: Choose the appropriate answer:
(i) A coin tossed once; what is the probability of getting a head?
(a) 1
(b) 2
(c) 1/2
(d) 0
(ii) In the interval (0â€“10), 10 is called the
(a) Lower limit
(b) upper limit
(c) range
(d) frequency
(iii) Tally marks are used to represent:
(a) Lower limits
(b) upper limits
(c) range
(d) frequency
(iv) The mid-value of the class interval is called class mark and it is equal to:
(a)
(b)
(c)
(d)
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?
ANSWERS
1. (1) â†’ PROBABILITY
(2) â†’ FREQUENCY
(3) â†’ HISTOGRAM
(4) â†’ DATA
(5) â†’ EVENT
2. (a) â†’ (iii)
(b) â†’ (i)
(c) â†’ (ii)
(d) â†’ (iv)
3. (i) (c)
(ii) (b)
(iii) (d)
(iv) (c)
4. (i) 7
(ii) 1/2
(iii) 1
(iv) â†’ piechart