Summative Test #3

 A certain town recorded Heat index in degrees Celsius for seven consecutive days:                

 43, 47,45,48,42,43,45.

       What is the median heat index of the city for the period of 7 days?

         

• 45

• 44

• 43

• 42

 In a certain city, the temperature was recorded in degrees Celsius for five consecutive days:                

 39, 42, 40, 38, 41.

       What is the mode temperature of the city for the period of 5 days?

         

• 40

• 41

• 42

• 39

 A particular town experienced rainfall in millimeters for eight consecutive days:                

 10, 15, 12, 10, 11, 13, 14, 12.

       What is the median rainfall of the town for the period of 8 days?

         

• 12

• 13

• 14

• 15

 The wind speed in a specific location was recorded in kilometers per hour for six consecutive days:                

 20, 18, 22, 19, 21, 20.

       What is the mean wind speed of the location for the period of 6 days?

         

• 20

• 19

• 21

• 22

 A certain town recorded Heat index in degrees Celsius for seven consecutive days:                 

43, 47,45,48,42,43,45.

      

       What is the lower quartile of the heat index of the city for the period of 7 days?

             

• 45

• 44

• 43

• 42

 A certain town recorded Heat index in degrees Celsius for seven consecutive days:                 

43, 47,45,48,42,43,45.

      

      What is the 7^th decile of the heat index of the city for seven days?

      

• 43

• 45

• 47

• 48

 A certain town recorded Heat index in degrees Celsius for seven consecutive days:                 

43, 47,45,48,42,43,45.

      

         What is the 80^th percentile of the heat index of the city for the period of 7 days?

            A.      43                        B.      44                          C.   45                                    D.47

      

• 43

• 45

• 47

• 48

There are 50 grades of students. The researcher wants to have 20 samples only. What he did was; he wrote the student’s number with his or her corresponding grade on uniform size of slips of paper. Then he rolled the pieces of paper uniformly and placed them in a box. Then he drew a slip of paper at a time, shaking the box after each draw until 20 samples were taken. What sampling technique did the teacher use?

• simple random sampling     

• systematic sampling       

• stratified sampling     

• purposive sampling

What is considered as the most commonly used measure of central tendency?

• mean

• median

• mode

• range

What is the most frequent value in the distribution?

• mean

• median

• mode

• range