GROUPED DATA

Kath is the fourth tallest in the group of 10. It means that 60% of the students are shorter than her. The measures of position being illustrated by the given situation is 6^th percentile.

• True
• False

In formulating statistical mini-research, you need to make a good title, gather data through a survey, organize and analyze your data, discuss your results, and make conclusions and recommendations about your research.

• True
• False

1The measures of central tendency in statistics are quartiles, deciles and percentile.

• True
• False

What does it mean if the median or Q₂ is 16?

• 50% of the students have 16 active android applications.

• 50% of the students have 16 active android applications and below.

• 20% of the students have 16 active android applications and below.

• 80% of the students have 16 active android applications and above.

The lower quartile of the ages of 250 fourth year students is 16 years. Which of the following statements is TRUE?

• Most of the students are below 16 years old.

• Twenty-five percent of the students are below 16 years old.

• Seventy-five percent of the students are 16 years old and above.

• One hundred eighty-seven of the students are above 16 years old.

Ryan passed in a 100-item achievement test, his score is the 75th percentile. What does it imply?

• Ryan got at least 75 items correctly.

• Ryan was able to answer all the questions.

• The passing score of the test is 75 points and above.

• Ryan belongs to the 25% of students that passed the test.

Using the given frequency distribution table, how many students were involved in the survey?

• 5

• 40

• 50

• 60

Using the given frequency distribution table, what is the value of the less than cumulative frequency (<cf) of the weight between 58 – 60?

• 43

• 35

• 20

• 15

Using the given frequency distribution table, what is the value of the class interval (i ) ?

• 3

• 4

• 39.5

• 60

What is the lower boundary (LB) of the median class?

•    50

• 54.5

• 57.5

• 60.5