For how many days were the number of road accident patients treated less than 4? For 120 days, the number of road accident patients treated in the hospital's emergency ward is given below:Number of Road Accident Patients Treated by a Hospital Emergency Ward
Number of patients / रोगियों की संख्या 0 1 2 3 4 5 6 7 Days / दिन 11 16 21 23 20 17 7 5
71
From the table, we see that for the days when the number of patients treated was less than 4, there are 71 such instances (sum of the frequency for 0, 1, 2, and 3). Therefore, the correct answer is option 1, "71."
Similar Questions
In a pie chart depicting total expenses of a company for the year 2016, raw material had a central angle of 45°. If total expenses were Rs 504 Lakhs, what were the company's expense on raw materials (in Rs lakhs)?
Find the mode from the following table.
Class and Frequency Table
The following data shows the class and frequency distribution:
Class / वर्ग 0-10 10-20 20-30 30-40 Frequency / आवृत्ति 15 25 30 20 Find P(A'/B'), given P(A) = 3/4, P(B) = 9/20 and P(A∩B) = 1/4?
10% of people in a village are afflicted with a viral disease. What size of sample should be taken to ensure that error of estimation of the proportion is not more than 5% with 95% confidence?
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In statistical hypothesis testing, a type I error is the ___________________________ a false null hypothesis.
Find the Value Index (in %) using the following data: ΣΟοΡη = 2500, ΣΟΠΡη = 2750, ΣΟοΡο = 2250 and ΣΩηΡο = 2000.
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\[ r_{12} = r_{13} = r_{23} = r \neq 1 \]
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If the angle between two lines of regression is 90°, then correlation coefficient is:
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X: 1 2 3 4 5
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Important Questions from Correlation and regression of two variables
- What is true about multiple regression ?
(A) There can be more than two criterion
(B) There can be more than two predictors
(C) It indicates linear relation between one predicator and one criterion
(D) The equation for regression line contains partial regression coefficients
Choose the correct answer from the options given below : In the case of two variables. the estimated regression equation is ŷ = 60 + 5x. The total sum of squares is 15730 and the sum of squares due to error is 1530. The estimated regression line based on this information is a ______.
In a pie chart depicting total expenses of a company for the year 2016, raw material had a central angle of 45°. If total expenses were Rs 504 Lakhs, what were the company's expense on raw materials (in Rs lakhs)?
Find the mode from the following table.
Class and Frequency Table
The following data shows the class and frequency distribution:
Class / वर्ग 0-10 10-20 20-30 30-40 Frequency / आवृत्ति 15 25 30 20 Find P(A'/B'), given P(A) = 3/4, P(B) = 9/20 and P(A∩B) = 1/4?
