GRADE 10 SUMMATIVE TEST -PROBABILITY

A die is rolled once .Find the probability of obtaining 5.

• 1/6

• 3/6

• 1/2

• 2/3

A box contains 3 red balls , 5 yellow balls and 2 blue balls . if a ball is picked at random from the box , what is the probability that a ball picked is a yellow ball?

• 2/10

• 5/10

• 1/2

• 3/10

Given the following Data set 1,7,7,16,21,30,31 what is the value of n ?

• 7

• 16

• 30

• 21

When rolling a 6-sided die, what is the probability of rolling either an even number or a 5 ?

• 1/2

• 2/3

• 1/12

• 5/6

what is the class size of the given class interval ?

20-25,

26- 31

32- 37

• 5

• 6

• 4

• 7

The height (in cm) of 20 volleyball and basketball players are the following 145 ,147 ,148 ,148 ,151, 153 ,155, 155, 160 160, 161, 165, 166 ,167, 169, 169, 169, 170, 174, 175 what is the range of the given data set?

• 30

• 31

• 30/5

• 31/5

The height (in cm) of 20 volleyball and basketball players are the following 145 147 148 148 151 153 155 155 160 160 161 165 166 167 169 169 169 170 174 175 . Find the median of the given data set.

• 155

• 153

• 161

• 160

The height (in cm) of 20 volleyball and basketball players are the following 145 ,147, 148, 148, 151, 153, 155, 155, 160 ,160, 161, 165, 166, 167, 169, 169, 169, 170, 174, 175. What is the mode of the data set?

• 160

• 169

• 155

• 148

Using the data set ( 1,3,7,7,16,21,27,30,31) What number is in upper quartile?

• 21

• 30

• 31

• 16

Jennifer got a score of 55 which is equivalent to 70th percentile in a University exam. Which of the following is not true?

• Her score is below the 5th decile

• Thirty percent of the class got scores of 55 and above.

• If the passing mark is the first quartile, she passed the exam

• She scored above 70% of her classmate.