Review for Grade 11 students - Mathematics

Arian wants to test whether there is a relationship between the number of Covid-19 patients and the age of the patients by ranking them. Which is the correct statistical tool to be used?

• T-test

• Z-test

• Pearson r

• Spearman's rank

The following are point estimator, EXCEPT:

• Sample Mean

• Sample Statistics

• Sample Variance

• Sample Standard Deviation

Suppose we want to know if there is a correlation between the number of hours that the students play online games to the number of hours they spent studying. Which test statistic is to be used?

• z-test

• t-test

• f-test

• pearson r

Aika is going to test whether there is a significant difference between the mean height of 20 random sample students. If the population variance is unknown, the correct statistical tool to be used is _____.

• t-test

• z-test

• pearson r

• spearman's rank

Kyle conducts a survey about the perceptions of grade 11 students in Covid 19. He used a fishbowl or lottery sampling to complete the random process of selection. Which type of random sampling technique is being used?

• Simple

• Systematic

• Cluster

• Stratified

Suppose Miss Rafaela would like to deposit ₱75,000 at the beginning of each month in a bank that pays 11% compounded monthly. Which of the following describes this type of annuity according to the time of payment?

• Simple Annuity

• General Annuity

• Ordinary Annuity

• Annuity Due

Which of the following represents a function?

• {(1,1),(2,2),(3,3)}

• {(-4,2),(4,8),(-4,5)}

• {(1,1),(1,2),(1,3)}

• {(0,0),(0,1),(0,2)}

Which graph represents a mere relation?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

A Mathematics score is 80. If it is given that, the mean is 74 and the standard deviation is 6, which is the corresponding z-score?

• 1

• -1

• 2

• 4

Which of the following is/are TRUE about the normal distribution?

I. Unimodal

II. Skewed to the right

III. Mean, median, and mode are equal

IV. The sum of cumulative probability is 1

• I and II

• III only

• I, III, and IV

• I, II, and III