📊 statistics

1. The problem asks to find the distances of the interquartile range for the given intervals: 0-5, 5-10, 10-15, 15-20, 20-25, and express them correct to 2 decimal places. 2. The i

1. The problem asks to predict the numbers for 21-10-2025 for several places based on previous data for October 2025. 2. We have data for each location from 01-10-2025 to 20-10-202

1. We are given that the distance is 5 units and asked to find the interquartile range (IQR) of the distances, correct to 2 decimal places. 2. The interquartile range (IQR) is the

1. **State the problem:** We are given distances in kilometers covered by workers from their homes to the factory, and we want to find the mean and standard deviation of the distan

1. **State the problem:** We want to test whether the average height of 40 students is less than 160 cm. 2. **Set hypotheses:**

1. **State the problem:** We are given I.Q. scores of 60 children and need to form a frequency distribution with class intervals of width 15. Then, we will locate the mode graphica

1. The problem involves finding the inverse binomial using a Casio GDC calculator. 2. To solve an inverse binomial problem, you typically want to find the number of trials or proba

1. **Problem (e):** Find the probability that a person rides both Daifong and Torbellino. Since the probability of riding Torbellino is $0.61$ and the probability of riding Daifong

1. The mode of a data set is the value that appears most frequently. 2. To find the mode, first list all the numbers in the data set.

1. Stating the problem: We need to identify the letters on the chart that correspond to the height of the missing bars for Thursday's plums and kiwis sold. 2. Given data:

1. **State the problem:** We need to find the best scale for the vertical axis for test scores data: Wilfred: 23

1. Problem statement: Tracey says the number of male students is the same over the three years, and the number of female students increases each year. 2. Analyze each chart:

1. **State the problem:** We are given a survey of 750 people and the frequencies of their favourite ice cream flavours. 2. The frequencies are Vanilla: 262, Chocolate: 417, Strawb

1. Stating the problem: We are asked to organize given device access data into a frequency table including Device type, Tally, Frequency, and Relative frequency (%). 2. First, writ

1. **State the problem:** We have grouped data of student ages and their frequencies. We need to calculate the mean age and analyze the histogram to find the modal age. 2. **Calcul

1. **Advantages and Disadvantages of Sampling Methods:** **Probability Sampling Methods:**

1. **Problem Statement:** Find the area of the standard normal distribution between z = -0.67 and z = 0 (Check Your Progress 3).

1. **State the problem:** There are 85,740 people surveyed, and 11/30 of them go to the zoo more than twice a year. We need to find how many people that is and round the answer to

1. **Problem statement:** A vegetable distributor has tomato weights normally distributed with mean $\mu = 0.61$ lb and standard deviation $\sigma = 0.15$ lb.

1. সমস্যার বর্ণনা: আমাদের কাছে প্রাণী সংখ্যার শ্রেণীবিন্যাস এবং জনসংখ্যার তথ্য দেওয়া হয়েছে। প্রতিটি শ্রেণীর (৩০-৪০, ৪০-৫০, ..., ৯০-১০০) জনসংখ্যা আছে (৪, ৬, ৮, ১২, ৯, ৭, ৪)।

1. **Problem Statement:** Calculate the variance between clusters $v_b$ using the given formula: