Statistics - practice problems
Number of problems found: 537
- Consider 5
Consider the data below that shows the number of COVID cases of the fifteen barangays in Naga City: { 4, 7, 0, 3, 2, 1, 2, 1, 5, 4, 1, 3, 2, 3, 1}. What is the mean of the data? - Decile
Find the 5.5th decile of the data: 62, 60, 37, 57, 55, 59, 57, 50, 49, 61 - A sample
A sample of 10 randomly selected students revealed the following grades in Business Statistics first test (in a marking scale of 0 to 100): 79, 63, 60, 45, 55, 58, 59, 62, 40, 68. Examine the data using groups and presenting: a) the Histogram of the absol - 45 percentile
Given the following data 11 15 24 33 10 35 23 25 40 What is P45? - Confidence 61774
What is the smallest number of men we would have to choose to estimate the mean height of men with an accuracy of +, - 0.5cm and 95% confidence, assuming a standard deviation of 8cm? - A student 2 A student randomly selected 225 college students and asked them whether they ate breakfast that morning before coming to campus. There were 57 students that were at least 25 years old, of which 30 had breakfast that morning. Of the 168 students that were
- Z-score
The mean adult male pulse rate is 67.3 beats per minute with a standard deviation of 10.3. Find the z-score for an adult male’s pulse rate of 75. (Round the z-score to two decimal places. ) - Bottles 5
Sections A 9 1/2, sections B 7 1/3, sections C 8 3/4. what is the average collection of bottles per section? - The size 2
The size of pants sold during one business day in a department store are 32, 38, 34, 42, 36, 34, 40, 44, 32, and 34. Find the average size of the pants sold. - Average score
In a math exam, two students scored 95, six students scored 90, 3 students scored 80, and one students scored 50. What was the average score for the class? - Publishing company
Suppose you work for a publishing company and before launching a new magazine targeting fashion-oriented consumers, your boss wants to hold a meeting with perspective advertisers. Assume that annual expenditures on magazine ads in this genre are normally - The average 3
The average of fractions is 7/10. One of the fractions is 2/3; the other fraction is? - Manufacturing company
A random sample of 8 manufacturing companies is selected from a population of manufacturing companies. The market values (in millions of rands) of these eight manufacturing companies are: 17 65 117 206 172 181 221 94 What is the lowest and highest market - A professor
A professor in a typing class found out that the average performance of an expert typist is 85 words per minute. A random sample of 16 students took the typing test and an average speed of 62 words per minute was obtained with a standard deviation of 8. C - Five number summary Find the five-number summary for these data and make a boxplot. 14,5,12,19,2,35,5,4,3,7,5,8
- Between two mixed
What is the rational number between 2 1/4 and 2 4/5? - Dataset: Dataset: 35 22 18 54 22 46 28 31 43 22 14 17 25 19 33 14. 1 Group the data into a grouped distribution using 6 classes of equal width. 2. Determine the mean, median, and mode using the raw data. 3. Draw an Ogive curve corresponding to the data and use it
- Statistical survey Write TRUE OR FALSE for each question: 1 Standard deviation is a measure of central location. 2. The most frequent observation in a data set is known as the mode. 3 The most passive method of data collection is observation. 4 Access time for secondary dat
- Harmonic HM example
Find the harmonic mean of 4 and 8. - Gradually 34921 We gradually measured the values of 3,8,13,10,1,13,10,5,3,9. Calculate how much is the sum of the median and average of this file from the mode of this file.
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