The following data give the annual salaries (in thousand dollars) of 20 randomly selected health care workers. 50

72

57

38

45

65

37

51

35

62

74

40

68

43

77

61

58

54

65

59

a. Calculate the values of the three quartiles and the interquartile range.
b. Find the approximate value of the 30th percentile.
c. Calculate the percentile rank of 61.

answer: was that a question or answer?

step-by-step explanation:

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

answer: i'm not sure

step-by-step explanation:

nada

step-by-step explanation: