Podcast
Questions and Answers
What is the formula to calculate the cumulative frequency up to the i-th interval?
What is the formula to calculate the cumulative frequency up to the i-th interval?
- CF_i = ∑(j=1)^i f_j (correct)
- CF_i = ∑(i=1)^j f_j
- CF_i = ∑(j=1)^i f_j^2
- CF_i = ∑(j=1)^i (f_j - 1)
What are the points used to plot an ogive?
What are the points used to plot an ogive?
- (x_0, CF_1), (x_1, CF_2), (x_2, CF_3), …, (x_i, CF_i)
- (x_0, 1), (x_1, CF_1), (x_2, CF_2), …, (x_i, CF_i)
- (x_0, 0), (x_1, CF_1), (x_2, CF_2), …, (x_i, CF_i) (correct)
- (x_0, CF_0), (x_1, CF_1), (x_2, CF_2), …, (x_i, CF_i)
What is the first step in constructing an ogive?
What is the first step in constructing an ogive?
- Create a cumulative frequency table from the frequency table. (correct)
- Plot points using the upper limits of intervals and their corresponding cumulative frequencies.
- Identify the median of the data set.
- Connect the points with straight lines.
What percentile is the median equivalent to?
What percentile is the median equivalent to?
What is the formula to calculate the k-th percentile?
What is the formula to calculate the k-th percentile?
What is the purpose of an ogive?
What is the purpose of an ogive?
What is the cumulative frequency of the 3rd interval, given the frequencies of the first three intervals are 5, 8, and 12?
What is the cumulative frequency of the 3rd interval, given the frequencies of the first three intervals are 5, 8, and 12?
In an ogive, what is the y-axis typically represented by?
In an ogive, what is the y-axis typically represented by?
What is the purpose of finding the median using an ogive?
What is the purpose of finding the median using an ogive?
How do you find the third quartile (Q3) using an ogive?
How do you find the third quartile (Q3) using an ogive?
What is the interpretation of the 75th percentile?
What is the interpretation of the 75th percentile?
What is the advantage of using an ogive over a frequency table?
What is the advantage of using an ogive over a frequency table?
A dataset has 30 observations. What is the cumulative frequency at the 60th percentile?
A dataset has 30 observations. What is the cumulative frequency at the 60th percentile?
An ogive is used to find the median of a dataset. If the median is 25, what is the corresponding cumulative frequency?
An ogive is used to find the median of a dataset. If the median is 25, what is the corresponding cumulative frequency?
A frequency distribution has a total of 50 observations. What is the cumulative frequency at the 30th percentile?
A frequency distribution has a total of 50 observations. What is the cumulative frequency at the 30th percentile?
An ogive is used to find the first quartile of a dataset. If the first quartile is 10, what is the corresponding cumulative frequency?
An ogive is used to find the first quartile of a dataset. If the first quartile is 10, what is the corresponding cumulative frequency?
A dataset has 40 observations. What is the cumulative frequency at the 20th percentile?
A dataset has 40 observations. What is the cumulative frequency at the 20th percentile?
An ogive is used to find the third quartile of a dataset. If the third quartile is 30, what is the corresponding cumulative frequency?
An ogive is used to find the third quartile of a dataset. If the third quartile is 30, what is the corresponding cumulative frequency?
