Schedule: December 14, 2011 yeah 3 days nalaaaang
+English~~ Continuation of poetry slam
+Mathematics~~ Index card sa workbook!! hala!! di ko nadala!! CRAMMMMM!!!!!
+Earth Science~~ Quiz about Local and Global Winds (yung report ni Riz and Joy), and Air pressure
+Natural Science~~ Bring the following INDIVIDUALLY:
1) coloring materials
2) thick folder or cardboard
3) scissor or cutter
4) glue or paste
+Research~~ yung mga di nakakuha!! sorry konti lang nacopy ko!!
Sa May Measures of Variability
3) Make a frequency distribution table bout' the following and found Sample Variance and Sample Standard Deviation
10, 23, 13, 20, 24, 25, 50, 25, 65, 23, 28, 45, 21, 24, 51, 12, 56, 42, 13, 20, 35, 15, 10, 65, 24, 32, 52, 26, 30, 10, 25, 31
4) Make a frequency distribution table bout' the following and found Mean Absolute Deviation
4, 6, 11, 19, 20, 4, 4, 22, 5, 7, 11, 3, 6, 8, 6, 10, 4, 4, 2, 4, 8, 7, 5, 2, 7, 9, 7, 3, 9, 5, 8, 5, 1 ,6, 5, 8, 2, 2, 4, 7, 5, 3, 6, 4
Sa May Normal Distribution
Exercise 7.1
1) Convert the following scores to z-score if Mean is 50 and Standard Deviation is 10.
a) x=76
b) x=40
c) x=50
2) In a multiple choice exam in chemistry, Maria and Juana received scores of 82 and 65 respectively. If these scores are equivalent to z-scores of 1.6 and -0.2 respectively. What are the Mean and Standard Deviation of scores of all students who took the exam?
3) Change the following scores to z-scores using Mean-15 and Standard Deviation is 2
a) 10
b) 15
c) 20
4) In a certain test in English, the mean score of a group of 200 students was 56 and the standard deviation was 12. In a test in chemistry, the mean was 68 and standard deviation was 8. If a student scored 65 in English and 75 in Chemistry,in which test did he perform better?
5) In an exam in statistics, the mean score was 65 and standard deviation was 15. Find z-scores of students who have their following scores.
a)100
b) 45
Exercise 7.2
1) In a physics examination, the mean grade is 80 and standard deviation is 5.
a) Find z-scores of two students whose grades are 90 and 60.\
b) Find grades of two students whose z-scores are -0.5 and 1.8
2) In ABC High School, the mean IQ test score of the first year students is 102 and standard deviation is 12. What is z-score of a student whose IQ test score is 106?
Exercise 7.6
1) Calculate degrees of kurtosis for data below
a) lengths in cm. of statistics books sold in a department store.
15, 31, 20, 32,20, 33, 21, 34,21, 35, 21, 35, 22, 35, 23, 35, 25, 35, 28, 35, 30
b) widths in inches of shoulders of individuals
18, 29, 35, 18, 29, 35, 19, 30, 36, 20, 31, 36, 22, 31, 36, 25, 31, 36, 26, 31, 36, 28, 35, 36, 28, 35, 36, 28, 35, 36, 28, 35, 36
2) Calculate the coefficient of variation between heights and weights of certain students in data below. Can you conclude heights are more varied than the heights?
Mean Standard Deviation
Height(in feet) 5.5 0.5
Weight(in pounds) 159 5
3) Calculate the coefficient of variation
Mean Standard Deviation
Age(years)students 15 3
Weight(pounds) 80 12
+Araling Panlipunan~~ Quiz on Aralin 8 (BATAS MILITAR)
+ICT~~activity :P
+Filipino~~ discussion group report
whattanice day but others are still lonely
hope everybody don't take pain and loneliness to seriously
HOPE you enjoy!!
No comments:
Post a Comment